Shrimp captured from the wild

I only found data for other species of this genus. All animals of the Acetes genus are relatively small, 1–4 centimetres long (Fischer & Bianchi, 1984).

For A. vulgaris:
Arshad, A., Amin, S. N., Yu, G. T., Oh, S. Y., Bujang, J. S., & Ghaffar, M. A. (2008). Population characteristics, length-weight and length-length relationships of Acetes vulgaris (Decapoda: Sergestidae) in the coastal waters of Pontian, Johor, Peninsular Malaysia. Journal of Biological Sciences, 8(8), 1298-1303.
http://docsdrive.com/pdfs/ansinet/jbs/2008/1298-1303.pdf

For A. intermedius:
Musel, J., Anuar, A., Mohamad, S., Mustapa, N., Hassan, M. H., Rajali, H., & Anuar, A. (2019). Morphometric relationship and the spawning season of Acetes intermedius from the coast of Miri Sarawak, Northwestern Borneo. Aquaculture, Aquarium, Conservation & Legislation, 12(2), 457-471.
http://www.bioflux.com.ro/docs/2019.457-471.pdf

Other Acetes species:
Wong, B. Y., Ong, H. K. A., & Khoo, G. (2015). Length-weight relationships of Acetes spp. sampled along the west coast of Peninsular Malaysia. Sains Malaysiana, 44(3), 379-386.

Fischer, W. & Bianchi, G. (Ed.) (1984). "Sergestidae". Western Indian Ocean: Fishing Area 51. FAO Species identification sheets for fishery purposes. 5. Rome: Food and Agriculture Organization.
http://www.fao.org/3/ad468e/ad468eQM.pdf

Weight range estimated based on the sources cited above, adjusted per sample sizes. See here: https://docs.google.com/spreadsheets/d/1K7EMdCR2PCmCPiPcl_3ZXLu0r3y7aGcGfpt0_klqT58/edit?usp=sharing. Note that none of those studies provide mean weights but weight ranges (minimum and maximum).

Amani et al. (2011a), describe a weight range for this species of 5.60 to 71.40 g (n= 2060). The maximum weight registered for males is 49.20 g, while for females is 71.40 g. Such figures are probably in milligrams and not grams (“g” as a typo for “mg”) since the authors previously state that total weight (W) is in mg. This interpretation is also consistent with the average lengths reported by the same source–14.84 mm for males and 18.42 mm for females.

Amin et al. (2009a & 2009b) state that A. japonicus individuals captured on the Malaysian coast weigh from 4.10 mg and up to 102.70 mg (n=3510 in Amin et al. 2009a, and n=3516 in Amin et al. 2009b). While the minimum weight reported for individuals of both sexes is quite similar (4.10 for females and 4.20 mg for males), the maximum weight for males (33.80 mg) is significantly lower than that for females (102.70 mg).

Wong et al. (2015) also provide data for shrimp captured on the Malaysian coast. The authors describe shrimp weighing between 8.50 and 33.30 mg, (n=74). In this case, females also reach a maximum total weight (33.00 mg) significantly higher than that of males (20.60 mg).

Uye (1982) states that dry weight ranges from ~0.2 to 10 mg (n = 10 to 30). This data was not considered because it’s for dry individuals and the partial information on the sample size suggests it is too small.

All of these studies refer to A. japonicus captured on the Malaysian coast (although in different locations), while the major country capturing these animals is China, not Malaysia. It might be the case that A. japonicus sizes are slightly different off the coast of China on the high or low end. Unfortunately, no information in English was found about China. However, it is also possible that China captures shrimp near the coasts of Malaysia or that, in any case, shrimp caught by China are similar to those described by the literature reviewed here.

To account for these possible scenarios, the mean weight range should be wide. We considered this and, indeed, estimated a range based on likely minimum and maximum values.


Amani, A. A., Amin, S. N., Arshad, A., & Rahman, M. A. (2011). Population dynamics of sergestid shrimps Acetes japonicus in the estuary of Tanjung Dawai, Kedah, Malaysia. Journal of Fisheries and Aquatic Science, 6(7), 751. https://dx.doi.org/10.3923/jfas.2011.751.760

Amin, S. N., Arshad, A., Siraj, S. S., & Bujang, J. S. (2009). Population structure, growth and length weight relationship of sergestid shrimps (Acetes spp.) from the coastal waters of Malacca, Peninsular Malaysia. Sains Malaysiana, 38(2), 159-169.
​​http://www.ukm.my/jsm/english_journals/vol38num2_2009/vol38num2_09page159-169.html

Amin, S. M., Arshad, A., Siraj, S. S., & Sidik, B. J. (2009). Population structure, growth, mortality and yield per recruit of segestid shrimp, Acetes japonicus (Decapoda: Sergestidae) from the coastal waters of Malacca, Peninsular Malaysia. Indian Journal of Marine Sciences, 38(1), 57-68.
http://nopr.niscair.res.in/bitstream/123456789/4245/1/IJMS%2038%281%29%2057-68.pdf

Wong, B. Y., Ong, H. K. A., & Khoo, G. (2015). Length-weight relationships of Acetes spp. sampled along the west coast of Peninsular Malaysia. Sains Malaysiana, 44(3), 379-386.

No specific information for this species was found. Therefore, we relied on data available for another species of the Alpheidae family, A. bellulus. According to Wang et al. (2020), A. bellulus is “a representative species of Alpheidae.”

Kohda et al. 2017 and Harada(1969) describe A. bellulus specimens weighing between 0.44 to 3.2 g–however, note that those studies’ samples are small or not enough information is provided. Lengths of A. bellulus in Harada (1969) are within the range of the known length for A. glaber–up to 4 cm, according to Holthuis (1980) and Rowley (2008).

Alpheus euphrosyne shrimp also seems to be as long as A. glaber. Sexually mature females of this species are described to weigh, on average, between 1 to 2.5 g (Harikrishnan et al. 2010).

The above information on is consistent with more abundant literature describing A. glaber as a common prey for fishes and other crustaceans (Atkinson et al. 2003).

Atkinson, R.J.A.; Gramitto, M.E.; Froglia, C. (2003). Aspects of the biology of the burrowing shrimp <i>Alpheus glaber</i> (Olivi) (decapoda: caridea: alpheidae) from the Central Adriatic. Ophelia, 57(1), 27–42. doi:10.1080/00785236.2003.10409503
Harada, E. (1969). On the interspecific association of a snapping shrimp and gobioid fishes. Publications of the Seto Marine Biological Laboratory, 16(5), 315-334. http://hdl.handle.net/2433/175555
Harikrishnan, M., Unnikrishnan, U., MAJU, M. S., Reena Greeshma, A. R., & Kurup, B. M. (2010). Size at sexual maturity, egg number and reproductive output of the snapping shrimp Alpheus euphrosyne euphrosyne De Man, 1897. Invertebrate Reproduction & Development, 54(4), 195-202. https://www.tandfonline.com/doi/abs/10.1080/07924259.2010.9652333
Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm
Kohda, M., Yamanouchi, H., Hirata, T., Satoh, S., & Ota, K. (2017). A novel aspect of goby–shrimp symbiosis: gobies provide droppings in their burrows as vital food for their partner shrimps. Marine Biology, 164(1), 1-6. http://dx.doi.org/10.1007/s00227-016-3060-2

Rowley, S.J. 2008. Alpheus glaber Pistol shrimp. In Tyler-Walters H. and Hiscock K. Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. Retrieved from https://www.marlin.ac.uk/species/detail/2068

Wang, Q., Wang, Z., Tang, D., Xu, X., Tao, Y., Ji, C., & Wang, Z. (2020). Characterization and comparison of the mitochondrial genomes from two Alpheidae species and insights into the phylogeny of Caridea. Genomics, 112(1), 65-70. https://doi.org/10.1016/j.ygeno.2019.08.013

Ragonese, S., Bertolino, F., & Bianchini, M. L. (1997). Biometric relationships of the red shrimp, Aristaeomorpha foliacea Risso 1827, in the Strait of Sicily (Mediterranean Sea). Scientia Marina, 61, 367-377.
https://www.researchgate.net/profile/Marco-Bianchini-3/publication/230583849_Biometric_relationships_of_the_red_shrimp_Aristaeomorpha_foliacea_Risso_1827_in_the_Strait_of_Sicily_Mediterranean_Sea/links/0912f501a8a728b428000000/Biometric-relationships-of-the-red-shrimp-Aristaeomorpha-foliacea-Risso-1827-in-the-Strait-of-Sicily-Mediterranean-Sea.pdf

See also:
Rinelli, P., Bianchini, M. L., Casciaro, L., Giove, A., Mannini, A., Politou, C. Y., ... & Sabatini, A. (2013). Occurrence and abundance of the deep-water red shrimps Aristeus antennatus (Risso, 1816) and Aristaeomorpha foliacea (Risso, 1827) in the central eastern Mediterranean Sea. Cah. Biol. Mar, 54, 335-347.
https://www.researchgate.net/profile/Marco-Bianchini-3/publication/235752236_Occurrence_and_abundance_of_the_deep-water_red_shrimps_Aristeus_antennatus_Risso_1816_and_Aristaeomorpha_foliacea_Risso_1827_in_the_central_eastern_Mediterranean_Sea/links/0deec523b19e6aec53000000/Occurrence-and-abundance-of-the-deep-water-red-shrimps-Aristeus-antennatus-Risso-1816-and-Aristaeomorpha-foliacea-Risso-1827-in-the-central-eastern-Mediterranean-Sea.pdf

Maynou, F., & Cartes, J. E. (1997). Field estimation of daily ration in deep-sea shrimp Aristeus antennatus (Crustacea: Decapoda) in the western Mediterranean. Marine Ecology Progress Series, 153, 191-196.
https://www.int-res.com/articles/meps/153/m153p191.pdf

FAO. (2020). Report of the FAO/CECAF Working Group on the Assessment of Demersal Resources – Subgroup North Nouakchott, Mauritania, 2–10 December 2019 / Rapport du Groupe de travail FAO/COPACE sur l’évaluation des ressources démersales – Sous-groupe Nord Nouakchott, Mauritanie, 2–
10 decembre 2019. CECAF/ECAF 20/83. Rome. https://doi.org/10.4060/cb1539b. See pp. 380-381.
http://www.fao.org/3/cb1539b/cb1539b.pdf

These animals can grow much bigger, but this seems to be a realistic estimate of their weight when captured from the wild, according to:
Suquele, P. & Calautti, D. (2001). Informe sobre el estado de la pesquería de Langostino y Camarón en la. Ría de Bahía Blanca. Enero de 2001. Estudios y estadísticas de pesquerías artesanales y comerciales de la Provincia de Buenos Aires. Buenos Aires: Ministry of Agrarian Affairs. Government of the Province of Buenos Aires.
https://www.maa.gba.gov.ar/pesca1/images/archivos/informes_biologicos/estuariales_y_marinos/langostino/langostinocamaronenero01.pdf

Boschi, E. E. (1968). Crecimiento, migración y ecología del camarón comercial Artemesia longinaris BATE. In M.N. Mistakidis (Ed.), Proceedings of the World Scientific Conference on the Biology and Culture of Shrimps and Prawns, Mexico City, Mexico, 12–21 June 1967. Volume 1. Retrieved from http://www.fao.org/3/ac741t/AC741T16.htm

Still, note that the weight of these animals can fluctuate over very wide ranges:
According to Sampognaro Charquero (2014), "the sizes of A. longinaris individuals collected ranged from 0.1 to 10.4 g for females and from 0.2 to 5.3 g in weight for males" (15). The author found that the average weight for males was 1g and 3.5g for females.

Sampognaro Charquero, L. (2014). Estructura y dinámica poblacional del camarón Artemesia longinaris Bate, 1888 (Crustacea: Decapoda: Penaeidae) en Punta del Diablo, Uruguay. Retrieved from https://www.colibri.udelar.edu.uy/jspui/bitstream/20.500.12008/1592/1/uy24-16826.pdf

Other sources suggest much lower weights (below 2g) for adult specimens:
Gimenez, A. V. F., & Fenucci, J. L. (2002). Vitamin E requirement of the prawn Artemesia longinaris (Decapoda, Penaeidae). In Modern approaches to the study of Crustacea (pp. 85-89). Springer, Boston, MA.
https://www.researchgate.net/profile/Fernandez-Gimenez/publication/302293498_Vitamin_E_Requirement_of_the_Prawn_Artemesia_Longinaris_Decapoda_Penaeidae/links/5771e06d08ae6219474a5ee3/Vitamin-E-Requirement-of-the-Prawn-Artemesia-Longinaris-Decapoda-Penaeidae.pdf

Fenucci, J. L., & Haran, N. S. (2008). Effects of lecithin on cholesterol digestibility in the prawn, Artemesia longinaris (Crustacea, Penaeidae). Israeli Journal of Aquaculture-Bamidgeh, 60, 20474.
https://evols.library.manoa.hawaii.edu/handle/10524/19239

Another source describes much higher weights for A. longinarius raised in captivity:
Díaz, A. C., Espino, M. L., Arzoz, N. S., Velurtas, S. M., Ponce, N. M. A., Stortz, C. A., & Fenucci, J. L. (2017). Free radical scavenging activity of extracts from seaweeds Macrocystis pyrifera and Undaria pinnatifida: applications as functional food in the diet of prawn Artemesia longinaris. Latin american journal of aquatic research, 45(1), 104-112.
https://scielo.conicyt.cl/scielo.php?pid=S0718-560X2017000100010&script=sci_arttext

Estimates based on:
Łapińska, E., & Szaniawska, A. (2006). Environmental preferences of Crangon crangon (Linnaeus, 1758), Palaemon adspersus Rathke, 1837, and Palaemon elegans Rathke, 1837 in the littoral zone of the Gulf of Gdańsk. Crustaceana, 649-662.
http://www.vliz.be/imisdocs/publications/ocrd/103120.pdf

Cuesta, J. A., González-Ortegón, E., Rodríguez, A., Baldó, F., Vilas, C., & Drake, P. (2006). The decapod crustacean community of the Guadalquivir Estuary (SW Spain): seasonal and inter-year changes in community structure. In Issues of Decapod Crustacean Biology (pp. 85-95). Springer, Dordrecht.
https://d1wqtxts1xzle7.cloudfront.net/44254116/The_Decapod_Custacean_Community_of_the_G20160331-9964-1grt1f6.pdf?1459421367=&response-content-disposition=inline%3B+filename%3DThe_Decapod_Custacean_Community_of_the_G.pdf&Expires=1615329595&Signature=VKX1IeCR36-s3sWEATWR6aS8ITrtOu~SyvkKuEs7iAz5AxvFPuPl1ANYoZ2-jC0IWUACFcHFlZGbCqh14b1WUBBaEcHHHcqzUTuPq9Iu6tEAY8dPhsMiv3Mz-KHonhWfnmDMh9U~DybbBuBN0KzinWUaZjUilJgLIDdyP6tZ0Y3Ft~KrwH3pKClOF5z38lYg-YVQhVzVM8JNmVIu55wukG9~WJ2oIfxCSyEwZ2D17NsLEreSsIY5E~J91ZNjor5I-8vL5LypSy6-xH7ihRKBd6Ee25hnnF4SN8~MsTUablx47o1pqLJRtuapmtHZoFO9srs0B-mAlj5n5BoRIxMhpQ__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA

No data on the Crangon genus in general was found. Since Crangon crangon is the most commercially significant species in this category, and since the shrimps of this genus do not dramatically differ in size (according to max lengths documented by Holthuis, 1980), we are relying on figures for the C. crangon species.

Ramírez-León, M., Cántaro-Álvarez, R., & Reyes-Ávalos, W. (2018). Growth and survival of males of Cryphiops caementarius (Palaemonidae) with diets supplemented with common salt. Latin american journal of aquatic research, 46(2), 469-474.
https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000200469

Villanueva, O. 2011. Efecto del nivel de proteína dietaria sobre la respuesta inmunológica, ganancia de peso y supervivencia de cryphiops caementarius, en condiciones de laboratorio. Retreived from https://dspace.unitru.edu.pe/bitstream/handle/UNITRU/5922/Tesis%20doctorado%20-%20Orlinda%20Villanueva%20Valverde.pdf?sequence=1&isAllowed=y

Erhardt, J. M., & Tiffan, K. F. (2016). Ecology of nonnative Siberian prawn (Palaemon modestus) in the lower Snake River, Washington, USA. Aquatic Ecology, 50(4), 607-621.
https://link.springer.com/article/10.1007/s10452-016-9581-4

Estimate based on:
Cárdenas González, E., Maroto Castaño, M. P., & Muñoz Recio, A. (2008). Informe de Investigación Pesquera. Campaña Ecuador 08. Retrieved from https://issuu.com/telandweb/docs/iinforme_resultados_ecuador_08

Barriga, E., Salazar, C., Palacios, J., Romero, M., & Rodríguez, A. (2009). Distribución, abundancia y estructura poblacional del langostino rojo de profundidad Haliporoides diomedeae (Crustacea: Decapoda: Solenoceridae) frente a la zona norte de Perú (2007-2008). Latin american journal of aquatic research, 37(3), 371-380.
https://scielo.conicyt.cl/pdf/lajar/v37n3/art08.pdf

Leiva, B. et al. (1997). Informe Final FIP 95-19. Prospección de recursos demersales en aguas exteriores de las regiones X y XI. FIP - Fondo de Investigación Pesquera. Retrieved from https://www.oceandocs.org/bitstream/handle/1834/7417/NNFA89VNPVDPS1VX8RIQU1DTGS8HIP.pdf?sequence=1&isAllowed=y

Robey, J., Fennessy, S., Everett, B., Santos, J., & Groeneveld, J. (2013). Patterns in abundance, population structure and biology of knife prawn Haliporoides triarthrus on deep-water trawl grounds off eastern South Africa. African Journal of Marine Science, 35(4), 565–577. doi:10.2989/1814232x.2013.863804
https://www.tandfonline.com/doi/abs/10.2989/1814232X.2013.863804

Gooding et al. (1988) reported mean weights of up to 19.1 g (just in one of the dives). As acknowledged by the authors, this is “quite large when compared with a mean weight of 12 g for H. ensifer taken during trapping surveys in the NWHI (Gooding, 1984). and a maximum weight for H. ensifer of about 16 g reported by Struhsaker and Aasted (1974).” Indeed, Gooding (1984) reports mean weights of ~10g and up to ~12g (depending on the season).

Similarly, Lozano Álvarez et. al. (2007) provided much lower mean weight figures. Notably, in this study, shrimp were captured during different seasons and using various methods. Their figures are also similar to Struhsaker and Aasted’s (1974) data.

Therefore, mean weights were estimated primarily considering mean weights and their standard deviation provided by Lozano Álvarez et. al. (2007). The upper bound is a midpoint of Lozano et al. (2007) and Gooding et al. (1988) highest mean weights.

Gooding, R. M. (1984). Trapping surveys for the deepwater caridean shrimps, Heterocarpus laevigatus and H. ensifer, in the Northwestern Hawaiian Islands. Marine Fisheries Review, 46(2), 18-26.

Gooding, R. M., Polovina, J. J., & Dailey, M. D. (1988). Observations of Deepwater Shrimp, Heterocarpus ensifer, From a Submersible off the Island of Hawaii. 8. https://swfsc-publications.fisheries.noaa.gov/publications/CR/1988/8826.PDF

Lozano-Álvarez, E., Vázquez-Bader, A., Briones-Fourzán, P., & Gracia, A. (2007). Relative growth and size at first maturity of the deep water shrimp,Heterocarpus Ensifer (Decapoda, Pandalidae) from the southern Gulf of Mexico. Crustaceana, 80(5), 555–568. https://doi.org/10.1163/156854007780765588

Struhsaker, P. A. U. L., & Aasted, D. C. (1974). Deepwater shrimp trapping in the Hawaiian Islands. Mar. Fish. Rev, 36(10), 24-30. https://spo.nmfs.noaa.gov/sites/default/files/pdf-content/mfr36105.pdf

Arrasate-López et al. (2012) report 14.9 g as the mean weight for this species. González and Santana (1996) show that the sizes (length) of this species might vary significantly.

Therefore, the lower and upon bounds were estimated considering Arrasate-López et al. (2012) mean weight ± 5 g, in light of González and Santana’s (1996) length figures. The range provided is also consistent with weights reported by Jiménez Navarro et al. (2011) and Pajuelo et al. (2015).

Arrasate-López, M., Tuset, V., Santana, J., García-Mederos, A., Ayza, O., & González, J. (2012). Fishing methods for sustainable shrimp fisheries in the Canary Islands (North-West Africa). African Journal of Marine Science, 34(3), 331‑339. https://doi.org/10.2989/1814232X.2012.725281

González, J. A. & J. I. Santana (1996) Shrimps of the family Pandalidae (Crustacea, Decapoda) off the Canary Islands, Eastern Central Atlantic, South African Journal of Marine Science, 17(1), 173-182, doi: 10.2989/025776196784158437

Navarro, S. J., Alayón, J. P., López Abellán, L. J., Holtzhausen, J. A., Jiménez, J. F. G. (2011). Seamount associated species (fishes, crustaceans and cephalopods) Namibia-0802. In Preliminary report of the multidisciplinary research cruise on the Walvis Ridge seamounts (Atlantic Southeast-SEAFO), 98-91. Instituto Español de Oceanografía/National Marine Information and Research Centre: Madrid & Swakopmund. https://www.vliz.be/en/imis?module=ref&refid=245502&printversion=1&dropIMIStitle=1

Pajuelo, J. G., Triay-Portella, R., Santana, J. I., & González, J. A. (2015). The community of deep-sea decapod crustaceans between 175 and 2600 m in submarine canyons of a volcanic oceanic island (central-eastern Atlantic). Deep Sea Research Part I: Oceanographic Research Papers, 105, 83-95

Estimate based on:
Hancock, D. A., & Henríquez, G. (1968). Stock assessment in the shrimp (Heterocarpus reedi) fishery of Chile. In Mistakidis, M.N. (Ed.). Proceedings of the World Scientific Conference on the Biology and Culture of Shrimps and Prawns, Mexico City, Mexico, 12–21 June 1967. Volume 2. Review, regional summary and experience papers. Rome: FAO.
http://www.fao.org/3/ac740t/AC740T26.htm

See also: Canales, C. M., Company, J. B., & Arana, P. M. (2016). Spatio-temporal modelling of the maturity, sex ratio, and physical condition of nylon shrimp Heterocarpus reedi (Decapoda, Caridea), off Central Chile. Fisheries Research, 179, 1-9.
https://www.sciencedirect.com/science/article/pii/S0165783616300236?casa_token=RYWLn17yz_AAAAAA:dQnO-WFcDYsU9eH-bAPKDhVIgqyN4HG41h90S1GGnF0Xk7cxnrZbLshi1EDB0AVmbUzQtCTlRqo

Mean weights here estimated are based on length descriptions by Holthuis (1980), and weights provided by:

Aminisarteshnizi, M. (2021). Length-Weight Relationship and Fulton’s Condition Factor of Macrobrachium nipponense (De Haan, 1849) in Siah Darvishan River, Iran. Egyptian Journal of Aquatic Biology and Fisheries, 25(2), 551-560.
https://ejabf.journals.ekb.eg/article_165911_cb05d7c5f91e484b7b941f6503ee918a.pdf

Ettefaghdoost, M., Alaf Noveirian, H., & Falahatkar, B. (2018). Growth performance, feed efficiency and whole-body chemical composition of the oriental river prawn, Macrobrachium nipponense, fed different dietary protein and lipid levels. Iranian Journal of Fisheries Sciences, 17(3), 585-602.
http://jifro.ir/article-1-3497-en.pdf

Khanipour, A. A., Noori, A., Amini, M., & Kamrani, E. (2020). Length-weight relationship and Fulton’s condition factor of Macrobrachium nipponense (De Haan, 1849) in Anzali lagoon of Iran. Iranian Journal of Fisheries Sciences, 19(1), 496-500.
https://jifro.ir/article-1-2699-en.pdf

Namin, J. I., Nami, E., & Heidary, S. (2014). Length-Weight Relationship and Fulton's Condition Factor of Macrobrachium nipponense (De Haan, 1849) in southern coasts of the Caspian sea, Iran. Journal of Animal and Veterinary Advances, 13(2), 109-112.
http://www.ijabbr.com/article_7363.html

Note that fishcount.oug.uk estimates much higher mean weights for this species.

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Estimate based on:

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Kunda, M., Dewan, S., Uddin, M. J., Karim, M., Kabir, S., & Uddin, M. S. (2008). Length-Weight relationship, condition factor and relative condition factor of Macrobrachium rosenbergii in rice fields. Asian Fisheries Science, 21(4), 451-456.
https://www.researchgate.net/profile/Md-Uddin-82/publication/261133532_Length-Weight_relationship_condition_factor_and_relative_condition_factor_of_Macrobrachium_rosenbergii_in_rice_fields/links/00b7d53343ce84199c000000/Length-Weight-relationship-condition-factor-and-relative-condition-factor-of-Macrobrachium-rosenbergii-in-rice-fields.pdf

Lalrinsanga, P. L., Pillai, B. R., Patra, G., Mohanty, S., Naik, N. K., Das, R. R., ... & Nelliyoura, R. (2014). Yield characteristics and morphometric relationships of giant freshwater prawn, Macrobrachium rosenbergii (de Man, 1879). Aquaculture international, 22(3), 1053-1066.
https://link.springer.com/article/10.1007/s10499-013-9726-6

Ra'Anan, Z., Sagi, A., Wax, Y., Karplus, I., Hulata, G., & Kuris, A. (1991). Growth, size rank, and maturation of the freshwater prawn, Macrobrachium rosenbergii: analysis of marked prawns in an experimental population. The Biological Bulletin, 181(3), 379-386.
https://www.researchgate.net/profile/Armand-Kuris/publication/237688328_Growth_Size_Rank_and_Maturation_of_the_Freshwater_Prawn_Macrobrachium_rosenbergii_Analysis_of_Marked_Prawns_in_an_Experimental_Population/links/00b495277f8e7ccd63000000/Growth-Size-Rank-and-Maturation-of-the-Freshwater-Prawn-Macrobrachium-rosenbergii-Analysis-of-Marked-Prawns-in-an-Experimental-Population.pdf

Note that Fishcount.org.uk estimates lower mean weights for this species.

Note that Metapenaeus mastersii individuals are often misclassified as M. dalli (Holthuis 1980)

According to Sydney Fish Market (n.d.) data, the mean weight of this species is around 10g. This is consistent with Broadley’s (2014: 62) findings and other historical data there reported. Tweedley et al. (2017) describe weights of mature individuals that range from 5.9 to 12.2 g.


Broadley et al. (2017) report higher weights for males (9.3 g) and females (23.6g), but they also state that such figures are for asymptotic individuals and only a few are likely to reach that size.

Broadley, A. (2014). Assessing the potential for restocking the western school prawn Metapenaeus dalli in a temperate Australian estuary (Doctoral dissertation, Murdoch University). https://core.ac.uk/download/pdf/77133227.pdf

Broadley, A. D., Tweedley, J. R., & Loneragan, N. R. (2017). Estimating biological parameters for penaeid restocking in an Australian temperate estuary. Fisheries Research, 186, 488-501. https://doi.org/10.1016/j.fishres.2016.09.007

Sydney Fish Market (n.d.). School Prawn. Retrieved from https://www.sydneyfishmarket.com.au/Home/Seafood/Species-Information/List/school-prawn

Holthuis, L. B. (1980). Shrimps and prawns of the world: An annotated catalogue of species of interest to fisheries. Food and Agriculture Organization of the United Nations.

This estimate is based on information reported by:
Basith, A., Boer, M., Damar, A., Krisanti, M., & Fachrudin, A. (2019). Analysis of Biological Aspects of Endeavour Shrimp (Metapenaeus endeavouri) in the waters of Cirebon Regency. The International Journal of Engineering and Science (IJES), 8(3-I), 21–28.
https://www.theijes.com/papers/vol8-issue3/Series-1/C0803012128.pdf

Turnbull, C. T., & Atfield, J. C. (2007). Fisheries Long Term Monitoring Program—Summary of tiger and endeavour prawn survey results: 1998–2006. Brisbane, Australia: Department of Primary Industries and Fisheries. See p. 13.
https://www.daf.qld.gov.au/__data/assets/pdf_file/0005/66398/PrawnSummaryReport_Final.pdf

Note that sources from the industry suggest that these shrimp (frozen) can weigh up to 100 g. However, this seems to be the case of M. endeavouri for export, or to be sold in hotels and restaurants. Therefore, I assume that this is not representative of the majority of M. endeavouri shrimps–also, as suggested by Turnbull & Atfield (2007).
GBR Seafoods (2014). Endeavour prawn. Retreived from https://gbrseafoods.com/?product=saucer-scallop-board

Adjustment based on:
Chu, K. H., Chen, Q. C., Huang, L. M., & Wong, C. K. (1995). Morphometric analysis of commercially important penaeid shrimps from the Zhujiang estuary, China. Fisheries research, 23(1-2), 83-93.
https://www.sciencedirect.com/science/article/pii/016578369400342T

I also estimated the species' mean weight based on its mean length and comparing it to the weight of other species of similar length.:
Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Lower bound mean weight based on data from McHugh et al. (2015): total weight of catch (kg)(experiment 1 and 2)/estimated total number of individuals (experiment 1 and 2).

Upper bound mean weight based on Sydney Fish Market description (the same one as M. dalli: https://www.sydneyfishmarket.com.au/Home/Seafood/Species-Information/List/school-prawn)

McHugh, M. J., Broadhurst, M. K., Sterling, D. J., & Millar, R. B. (2015). A ‘Simple Anterior Fish Excluder’ (SAFE) for Mitigating Penaeid-Trawl Bycatch. PLOS ONE, 10(4), e0123124. https://doi.org/10.1371/journal.pone.0123124

Macbeth et al. Upper bound mean weight based on Sydney Fish Market description (the same one as M. dalli: https://www.sydneyfishmarket.com.au/Home/Seafood/Species-Information/List/school-prawn)

Estimated, based on:

Doumenge, F. (1973). Initial Organizational Work for Farming Penaeid Shrimp in St. Vincent's Bay (New Caledonia). The South Pacific Commission Fisheries Newsletter, 10, 5-21.
https://spccfpstore1.blob.core.windows.net/digitallibrary-docs/files/7f/7f3aa8c91349aa115e51176f5037d667.pdf?sv=2015-12-11&sr=b&sig=B4JwHcX0ioa%2FubI%2FK%2BQtx7GrhQ62dYxrRosqWBDN0Mw%3D&se=2021-11-15T20%3A19%3A22Z&sp=r&rscc=public%2C%20max-age%3D864000%2C%20max-stale%3D86400&rsct=application%2Fpdf&rscd=inline%3B%20filename%3D%22FishNews10.pdf%22

Rao, G. S. (1988). Length-weight relationship and other dimensional relationships of Metapenaeus monoceros (Fabricius) from the Kakinada coast. Indian Journal of Fisheries, 35(3), 211-215.
http://eprints.cmfri.org.in/333/1/Article_14.pdf

Note that there are significant differences between male and females shrimps of this species.

Estimation based on minimum average weight for M. joyneri and maximum average weight for M. ensis, adjusted for live weight, and also considering the mean weight of other species of similar length.
Chu, K. H., Chen, Q. C., Huang, L. M., & Wong, C. K. (1995). Morphometric analysis of commercially important penaeid shrimps from the Zhujiang estuary, China. Fisheries research, 23(1-2), 83-93.
https://www.sciencedirect.com/science/article/pii/016578369400342T

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Estimate based on: Sydney Fish Market (n.d.), length information (Holthuis 1980), data for M. dalli and McHugh et al.’s (2015).
As for McHugh et al.’s (2015) data= total weight of catch (kg)(experiment 1 and 2)/estimated total number of individuals (experiment 1 and 2) = 2.4 g. McBride & Maguire (1979) also describe capturing individuals that weigh 2g on average, but they are described as juveniles. Indeed, McHugh et al.’s (2015) data are from individuals whose average carapace length is slightly below 15 mm. These juveniles are considered too small for sale and are typically discarded (Macbeth et al. 2007).

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Macbeth, W. G., Millar, R. B., Broadhurst, M. K., Hewitt, C. W., & Wooden, M. E. (2007). Intra-fleet variability in the size selectivity of a square-mesh trawl codend for school prawns (Metapenaeus macleayi). Fisheries Research, 86(2-3), 92-98. doi:10.1016/j.fishres.2007.05.003

McBride, R. L., & Maguire, G. B. (1979). Taste panel evaluation of pond-fattened school prawns Metapenaeus macleayi (Haswell). Aquaculture, 16(3), 261-265.

Sydney Fish Market (n.d.). School Prawn. Retrieved from https://www.sydneyfishmarket.com.au/Home/Seafood/Species-Information/List/school-prawn

Krumme, U. (2003). Tidal and diel dynamics in a nursery area: patterns in fish migration in a mangrove in North Brazil. Ph.D. thesis, University of Bremen, Germany. Retrieved from https://core.ac.uk/download/pdf/46917655.pdf

Estimate based on:

Kurun, A., Balkıs, H., & Balkıs, N. (2007). Accumulations of total metal in dominant shrimp species (Palaemon adspersus, Palaemon serratus, Parapenaeus longirostris) and bottom surface sediments obtained from the Northern Inner Shelf of the Sea of Marmara. Environmental Monitoring and Assessment, 135(1), 353-367.
https://link.springer.com/content/pdf/10.1007/s10661-007-9655-9.pdf

Łapińska, E., & Szaniawska, A. (2006). Environmental preferences of Crangon crangon (Linnaeus, 1758), Palaemon adspersus Rathke, 1837, and Palaemon elegans Rathke, 1837 in the littoral zone of the Gulf of Gdańsk. Crustaceana, 649-662.
http://www.vliz.be/imisdocs/publications/ocrd/103120.pdf

Based on average weights for males (minus standard deviation), and average weight for ovigerous females (plus standard deviation), found in Janas & Bruska (2010). See also Janas & Mańkucka (2010).
Janas, U., & Mańkucka, A. (2010). Body size and reproductive traits of Palaemon elegans Rathke, 1837 (Crustacea, Decapoda), a recent colonizer of the Baltic Sea. Oceanological and Hydrobiological Studies, 39(2), 3‑24. https://doi.org/10.2478/v10009-010-0016-6

Janas, U., & Bruska, O. (2010). Energy values and energy resources of two prawns in Baltic coastal waters : The indigenous Palaemon adspersus and the non-indigenous Palaemon elegans. Oceanologia, 52(2), 281‑297. https://doi.org/10.5697/oc.52-2.281

Cuesta et al. (2006) provide figures for Palaemon spp.. This group consists of two species, Palaemon longirostris and Palaemon macrodactylus. I was not able to find more specific estimates for P. longirostris.

Cuesta, J. A., González-Ortegón, E., Rodríguez, A., Baldó, F., Vilas, C., & Drake, P. (2006). The decapod crustacean community of the Guadalquivir Estuary (SW Spain): seasonal and inter-year changes in community structure. In Issues of Decapod Crustacean Biology (pp. 85-95). Springer, Dordrecht.
https://d1wqtxts1xzle7.cloudfront.net/44254116/The_Decapod_Custacean_Community_of_the_G20160331-9964-1grt1f6.pdf?1459421367=&response-content-disposition=inline%3B+filename%3DThe_Decapod_Custacean_Community_of_the_G.pdf&Expires=1621975771&Signature=A7PpNMzwbL7YbIVj92pBF7aVQUJzo-dILFZED9RV4C4DjzMptTGsX5N9wepyrAIVsJlTuHCMFcgsa00mbUAIjvQnEW8S1o9mcRchbBHrDOs~tHq5rHoqHf4tmkCSX9qAhT6ltbsfYTPZzx4cH3lyoRGrLjLH-SkqXF7wKLc53HS-pWPb6kxYUtLBZBW2Z9Xehif0q~mEfq8aFcJKufDV0paBQCfZLCThi2M6km9AanQtWjM~JuvvMAJvg0NYqitfFcSbE2vEuBpdKP-iKiwi1Ro0ywkfNYYh5g~ezGuxMNvKCF-uFPSlspYq55gnJou44cz3ImXiBu0d86-s~NzV0w__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA

Kurun, A., Balkıs, H., & Balkıs, N. (2007). Accumulations of total metal in dominant shrimp species (Palaemon adspersus, Palaemon serratus, Parapenaeus longirostris) and bottom surface sediments obtained from the Northern Inner Shelf of the Sea of Marmara. Environmental Monitoring and Assessment, 135(1), 353-367.
https://link.springer.com/content/pdf/10.1007/s10661-007-9655-9.pdf

Lower bound is the lower bound for P. longirostris, the upper bound is the upper bound for P. serratus (the min and max estimated mean weights for species belonging to the Palaemon genus that we've considered).

This family contains more than 1200 species in 160 genera. Therefore, their weight range is very wide. I assume they can weigh relatively little as P. longirostries (also a freshwater species according to Taybi et al., 2021), P. modestus or males of the M. jelskii species, but also reach up to 30 g as a M. rosenbergii prawn. Note that Macrobrachium species inhabit only fresh or brackish water, and not marine environments (Holthuis, 1952).
See:
Erhardt, J. M., & Tiffan, K. F. (2016). Ecology of nonnative Siberian prawn (Palaemon modestus) in the lower Snake River, Washington, USA. Aquatic Ecology, 50(4), 607-621.
https://link.springer.com/article/10.1007/s10452-016-9581-4

Holthuis, L. B. (1952). A general revision of the Palaemonidae (crustacea Decapod Natantia) of the Americas. II. The subfamily Palaemonidae. http://hdl.handle.net/1969.3/20038

Rocha, S. S. D., Silva, R. L. S. D., Santos, J. D. L., & Oliveira, G. D. (2015). Length-weight relationship and condition factor of Macrobrachium amazonicum (Heller, 1862)(Decapoda, Palaemonidae) from a reservoir in Bahia, Brazil. Nauplius, 23(2), 146-158.
http://www.scielo.br/j/nau/a/jLmjKYkqnCcxBKnk4rnqXBj/?lang=en#

Taddei, F. G., Herrera, D. R., Davanso, T. M., Silva, T. E. D., Costa, R. C. D., & Fransozo, A. (2017). Length/weight relationship and condition factor of Macrobrachium jelskii (Miers, 1877) and M. brasiliense (Heller, 1862)(Decapoda, Palaemonidae) in two locations in the state of São Paulo. Nauplius, 25.
http://www.scielo.br/j/nau/a/NzGHQgxcrZ7JNVRZKFvbZ8k/?lang=en

Taybi, A. F., Mabrouki, Y., & Cuesta, J. A. (2021). First record of the white prawn Palaemon longirostris H. Milne Edwards, 1837 in the Mediterranean waters of Morocco. Miscel·lània Zoològica, 19, 307-312. http://dx.doi.org/10.32800/amz.2021.19.0307

This family contains more than 1200 species in 160 genera. One significant genus is Macrobrachium, but note that Macrobrachium species are typically freshwater or brackishwater (i.e., non marine) animals (Holthuis, 1952). See De Grave et al. (2009). Therefore, I consider as average weights for this family the weights of the most fished species of this family.

De Grave, Sammy, Pentcheff, N. Dean, Ahyong, Shane T, Chan, Tin-Yam, Crandall, Keith A., Dworschak, Peter C., Felder, Darryl L., Feldmann, Rodney M., Fransen, Charles H. J. M., Goulding, Laura Y. D., Lemaitre, Rafael, Low, Martyn E. Y., Martin, Joel W., Ng, Peter K. L., Schweitzer, Carrie E., Tan, S. H., Tshudy, Dale, and Wetzer, Regina. 2009. "A Classification of Living and Fossil Genera of Decapod Crustaceans." Raffles Bulletin of Zoology. 21 Supplement:1–109.
https://repository.si.edu/handle/10088/8358

Holthuis, L. B. (1952). A general revision of the Palaemonidae (crustacea Decapod Natantia) of the Americas. II. The subfamily Palaemonidae. http://hdl.handle.net/1969.3/20038

Estimates based on:

Casas-Sánchez, J. M. (2009). Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2009. NAFO/ICES WGPAND Meeting – October 2009. Northwest Atlantic Fisheries Organization. Serial No. N5717 NAFO SCR Doc. 09/56. Retrieved from http://www.repositorio.ieo.es/e-ieo/bitstream/handle/10508/672/scr09-056.pdf;jsessionid=C86D75A4D49DA516AF42F24A14D099BD?sequence=1

Patrocinio, T., Díaz-Conde, M. P., & Paz, X. (2004). Northern Shrimp (Pandalus borealis, Kroyer) in Spanish Bottom Trawl Survey 2003 in NAFO Divisions 3LNO. Scientific Council Meeting – October/November 2004. Northwest Atlantic Fisheries Organization. Serial No. N5049 NAFO SCR Doc. 04/79. Retrieved from http://www.repositorio.ieo.es/e-ieo/bitstream/handle/10508/1707/scr04-079.pdf?sequence=1

Skúladóttir, U., Pétursson, G., & Brynjólfsson, S. H. (2005). The biology of northern shrimp (Pandalus borealis) on the Flemish Cap. Journal of Northwest Atlantic Fishery Science, 37, 147-164. https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.499.3475&rep=rep1&type=pdf

Note that other older sources estimate wider range of average weights:
Río, J. L. D. (1996). Northern Shrimp (Panda/us borealis) on Flemish Cap in July 1996. Scientific Council Meeting - September 1996. Northwest Atlantic Fisheries Organization. Serial No. N2777 NAFO SCR Doc. 96/94. Retrieved from: https://core.ac.uk/download/pdf/36135799.pdf

Sainza, C. (1995). Northern shrimp (Pandalus borealis) on Flemish Cap in July 1995. Scientific Council Meeting - September 1995. Northwest Atlantic Fisheries Organization. Serial No. N2622 NAFO SCR Doc. 95/100. Retrieved from: https://digital.csic.es/bitstream/10261/83963/1/scr-95-100.pdf

Appendix - Table 9 (p. 68) in:
Davis, A. S. (1982). The commercial otter trawl shrimp fishery of Cook Inlet. Alaska Department of Fish and Game, Division of Commercial Fisheries. Retrieved from: http://www.adfg.alaska.gov/FedAidPDFs/afrbIL.205.pdf

Based on:

Butler, T. H. (1964). Growth, reproduction, and distribution of pandalid shrimps in British Columbia. Journal of the Fisheries Board of Canada, 21(6), 1403-1452.
https://cdnsciencepub.com/doi/abs/10.1139/f64-121

Eldridge, W. D., & Kuletz, K. J. (1980). Breeding and feeding ecology of pigeon guillemots (Cepphus columba) at Naked Island, Alaska. US Fish and Wildlife Service, Office of Special Studies.
https://ecos.fws.gov/ServCat/DownloadFile/49802?Reference=49386

Estimates based on:

Butler, T. H. (1964). Growth, reproduction, and distribution of pandalid shrimps in British Columbia. Journal of the Fisheries Board of Canada, 21(6), 1403-1452.
https://cdnsciencepub.com/doi/abs/10.1139/f64-121

Dahlstrom, W. A. (1970). Synopsis of biological data on the ocean shrimp. FAO Fisheries Synopsis No.99. Retrieved from http://www.fao.org/3/ac765t/AC765T11.htm

Hannah, R. W., & Richmond, N. T. (1993). Weight change of pink shrimp, Pandalus jordani, after commercial harvest and handling. Fishey Bulletin-National Oceanic and Atmospheric Administration, 91, 804-804.
https://spo.nmfs.noaa.gov/sites/default/files/pdf-content/1993/914/hannah.pdf

Also:
Saelens, M. R., & Hannah, R. W. (1988). Comparison of Balances for Estimating the Weight of Pink Shrimp (Pandalus Jordani) at Sea. Retrieved from https://www.dfw.state.or.us/mrp/shellfish/commercial/shrimp/docs/FILE%20REPORT-%201988-Salens-weight%20of%20pink%20shrimp%20estimation.pdf

Kavun, V. Y. (2008). Content of microelements in the grass shrimp Pandalus kessleri (Decapoda: Pandalidae) from coastal waters of the Lesser Kurilskaya Ridge. Russian Journal of Marine Biology, 34(1), 64-72.
https://link.springer.com/content/pdf/10.1134/S1063074008010094.pdf

Estimate based on (see p. 1242, fig. 4):
Simpson, A.C., Howell, B.R., & Warren, P.J. (1970). Synopsis of Biological Data on the Shrimp Pandalus montagui Leach, 1814. FAO Fimheriee Synopsis No.92. Bu.rnham-on-Crouoh, Essex, England: FAO. Retrieved from: http://www.fao.org/3/59252e/59252e.pdf

Based on:

See fig. 3, p. 48 in:
O'Clair, C. E., Lindeberg, M., Hugllef, C. (2002). Assessment of Spot Shrimp Abundance in Prince William Sound. A Decade after the Exxon Valdez Oil Spill. Restoration Project 02401. Final Report. Retrieved from https://www.arlis.org/docs/vol1/C/759531685.pdf

Butler, T. H. (1964). Growth, Reproduction, and Distribution of Pandalid Shrimps in British Columbia. Journal of the Fisheries Research Board of Canada, 21(6), 1403–1452. doi:10.1139/f64-121

Butler, T. H. (1967). Synopsis of biological data on the prawn Pandalus platyceros Brandt 1851. FAO Fisheries Synopsis No. 95. Retrieved from http://www.fao.org/3/ac765t/AC765T07.htm

Mean weights for juveniles:
Table 1, p. 887 in Rensel, J. E., & Prentice, E. F. (1979). Growth of juvenile spot prawn, pandalus platyceros, in the laboratory and in net pens using different diets. Fishery Bulletin, 76(4), 886-890.
https://books.google.es/books?id=JhRTP7FxehwC&lpg=PA887&ots=65yLHeW83D&dq=%22Pandalus%20platyceros%22%20%22mean%20weight%22&hl=ca&pg=PA886#v=onepage&q=%22Pandalus%20platyceros%22%20%22mean%20weight%22&f=false

Table III, p. 8 in Kelly, R. O., Haseltine, A. W., & Ebert, E. E. (1977). Mariculture potential of the spot prawn, Pandalus platyceros Brandt. Aquaculture, 10(1), 1–16. doi:10.1016/0044-8486(77)90028-x 

Note that the following source describes a much higher mean weight, but the sample is very limited (n=4) and not further details are provided:
Meyers, T. R., Lightner, D. V., & Redman, R. M. (1994). A dinoflagellate-like parasite in Alaskan spot shrimp Pandalus platyceros and pink shrimp P. borealis. Diseases of aquatic organisms, 18(1), 71-76.
https://www.int-res.com/articles/dao/18/d018p071.pdf

Based on weights for other two commercially relevant species of this group: P. dispar and P. danae.

Butler, T. H. (1964). Growth, Reproduction, and Distribution of Pandalid Shrimps in British Columbia. Journal of the Fisheries Research Board of Canada, 21(6), 1403–1452. doi:10.1139/f64-121

Bello-Olusoji, O. A. (2021). Balanced Equation, The Missing Value Shellfish. The Federal Universit of Technology, Akure, Nigeria. p. 34. Retrieved from: http://196.220.128.81:8080/xmlui/bitstream/handle/123456789/2771/PROF.%20OLUSOJI_124.pdf?sequence=1&isAllowed=y

Okpei, P., Aggrey-Fynn, J., & Okyere, I. (2020). Habitat distribution, species composition and size structure of penaeid shrimps (Decapoda: Dendrobranchiata: Penaeidae) in inshore waters of Ghana. Journal of Fisheries and Coastal Management, 2(1), 23-33.
https://www.crc.uri.edu/download/GH2014_SCI081_UCC_CRC_FIN508.pdf

Still, even if those figures are in grams, when considering its typical length (Holthuis, 1980; Sakai & Shinomaya, 2011) compared to reported weights of a similar species (P. maxillipedo, often confused with P. cornuta; see Subramanian, 2000), they seem pretty low..

No additional information was found. Therefore, the mean weight of this species was estimated assuming that it might be similar to that of other Parapenaeopsis species.

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Krishnan, A. S., & Pramod Kiran, R. B. (2016). Diversity of Penaeid Shrimps in the Trawl Fishery of South-West Coast of India. Journal of Aquatic Biology & Fisheries| Vol, 4, 163-165. http://www.keralamarinelife.in/Journals/Vol4-12/Journal%20ABF%20V4%20Apsara%20and%20Pramod.pdf

Sakai, K., & Shinomiya, S. (2011). Preliminary report on eight new genera formerly attributed to Parapenaeopsis Alcock, 1901, sensu lato (Decapoda, Penaeidae). Crustaceana, 84(4), 491.

Subramanian, V. Tl (2000). Fishery and biology of penaeid prawn Parapenaeopsis maxillipedo Alcock along Chennai (Madras) coast. Indian Journal of Fisheries, 47(3), 175-184. http://eprints.cmfri.org.in/140/1/Article_05.pdf

Estimate based on data for Parapenaeopsis hungerfordi from Chu et al. (1995) and for P. atlantica:
Chu, K. H., Chen, Q. C., Huang, L. M., & Wong, C. K. (1995). Morphometric analysis of commercially important penaeid shrimps from the Zhujiang estuary, China. Fisheries research, 23(1-2), 83-93.
https://www.sciencedirect.com/science/article/pii/016578369400342T

Estimate based on:
Kurun, A., Balkıs, H., & Balkıs, N. (2007). Accumulations of total metal in dominant shrimp species (Palaemon adspersus, Palaemon serratus, Parapenaeus longirostris) and bottom surface sediments obtained from the Northern Inner Shelf of the Sea of Marmara. Environmental Monitoring and Assessment, 135(1), 353-367.
https://link.springer.com/content/pdf/10.1007/s10661-007-9655-9.pdf

FAO. (2020). Report of the FAO/CECAF Working Group on the Assessment of Demersal Resources – Subgroup North Nouakchott, Mauritania, 2–10 December 2019 / Rapport du Groupe de travail FAO/COPACE sur l’évaluation des ressources démersales – Sous-groupe Nord Nouakchott, Mauritanie, 2–
10 decembre 2019. CECAF/ECAF 20/83. Rome. https://doi.org/10.4060/cb1539b. See pp. 351-352.
http://www.fao.org/3/cb1539b/cb1539b.pdf

Estimate based on findings by:
Maynou, F., & Cartes, J. E. (1998). Daily ration estimates and comparative study of food consumption in nine species of deep-water decapod crustaceans of the NW Mediterranean. Marine ecology progress series, 171, 221-231.
https://digital.csic.es/bitstream/10261/184125/1/Maynou_et_al_1998.pdf

Morales-Nin, B., Maynou, F., Sardà, F., Cartes, J. E., Moranta, J., Massutí, E., ... & Stefanescu, C. (2003). Size influence in zonation patterns in fishes and crustaceans from deep-water communities of the Western Mediterranean.Scientific Council Meeting – September 2001 (Deep-sea Fisheries Symposium – Oral). Northwest Atlantic Fisheries Organization. Serial No. N4536 NAFO SCR Doc. 01/142. Retrieved from https://archive.nafo.int/open/sc/2001/scr01-142.pdf

Torres, M. A., Vila, Y., Silva, L., Acosta, J. J., Ramos, F., Palomares, M. L. D., & Sobrino, I. (2017). Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain). Aquatic Living Resources, 30, 12.

Based on:
Alpoim, R., Avila de Melo, A., Banón, R., Casas, M., Cervino, S., Junquera, S., ... & Vázquez, A. (2002). Distribution and main characteristic of fish species on Flemish Cap based on the 1988-2002 EU-Surveys in July. NAFO Scientific Council Research Document, 2(72), 0-73. See p. 65.
https://digital.csic.es/bitstream/10261/26877/1/scr02-072.pdf

According to Olga and Denis (2018), P. tarda are ""heavier"" than P. multidentata, which typically weight between 0.5-4 grams (Apollonio, 1969).

Apollonio, S. (1969). Breeding and Fecundity of the Glass Shrimp, (Pasiphaea multidentata (Decapoda, Caridea), in the Gulf of Maine. Journal of the Fisheries Research Board of Canada, 26(8), 1969–1983. doi:10.1139/f69-187

Olga L., Z. & Denis, Z. (2018). Pasiphaea tarda Krøyer, 1845. Retrieved from http://megabenthos.info/catalog/arthropoda/malacostraca/decapoda/pasiphaeidae/pasiphaea/pasiphaea-tarda/

This is the largest of the families of Penaeidea. It contains an important number of commercially important species, like L. vannamei or P. monodon, and much smaller species like T. curvirostris (Holthuis, 1980). Thus, the mean weights here estimated are based on data compiled for other species of this family.

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Kapiris, K., Anastasopoulou, A., Kousteni, V., Lampri, P. N., Minos, G., Mytilineou, C., & Oikonomidis, G. (2017). New Fisheries-related data from the Mediterranean Sea (December, 2017). Mediterranean Marine Science, 18(3), 557-563.
https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/viewFile/15824/14236.pdf

Note that this source describe lower weights, but it is suggested that the individuals captured are not adults:
Lawrence, A., Castille, F., Samocha, T., Bray, W., Robertson, L., & Frelier, P. (1994). Shrimp Culture Research at Texas A&M University: 1989 to 1991. Bulletin/Texas Agricultural Experiment Station; no. 1715. See pp. 7-8.
https://core.ac.uk/download/pdf/147235281.pdf

Figures for juveniles and postlarvae can also be found in:
Blanco-Martínez, Z., Pérez-Castañeda, R., Sánchez-Martínez, J. G., Benavides-González, F., Rábago-Castro, J. L., de la Luz Vázquez-Sauceda, M., & Garrido-Olvera, L. (2020). Density-dependent condition of juvenile penaeid shrimps in seagrass-dominated aquatic vegetation beds located at different distance from a tidal inlet. PeerJ, 8, e10496.
https://peerj.com/articles/10496.pdf

Zein-Eldin, Z. P., & Aldrich, D. V. (1965). Growth and survival of postlarval Penaeus aztecus under controlled conditions of temperature and salinity. The Biological Bulletin, 129(1), 199-216.
https://www.journals.uchicago.edu/doi/abs/10.2307/1539778?journalCode=bbl

Estimated mean weights based on reported mean lenghts of captured animals.
Leite Jr, N. O., & Petrere Jr, M. (2006). Growth and mortalities of the pink-shrimp Farfantepenaeus brasiliensis Latreille, 1970 and F. paulensis Pérez-Farfante 1967 in southeast Brazil. Brazilian Journal of Biology, 66(2a), 523-536.
https://www.scielo.br/j/bjb/a/7LBWLKqy8js74Nh45csRNpy/?lang=en&format=pdf

No specific data for this species was found. This mean weight was estimated based on available data for other species (P. longistylus) that reach a similar maximum lenght.
Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/AC477E09.pdf

Kong, J., Yan, Y., Lu, X., Luan, S., Meng, X., Dai, P., ... & Luo, K. (2020). Integrative phenotypic and gene expression data identify myostatin as a muscle growth inhibitor in Chinese shrimp Fenneropenaeus chinensis. Scientific reports, 10(1), 1-9.

Estimate based on data of dry weight (adjusted) provided by Chu et al. (1995), lenght descriptions found in Holthuis (1980), other data provided by Yang et al. (2020), and information for other species of the same genus–e.g., P. monodon.

Chu, K. H., Chen, Q. C., Huang, L. M., & Wong, C. K. (1995). Morphometric analysis of commercially important penaeid shrimps from the Zhujiang estuary, China. Fisheries research, 23(1-2), 83-93.
https://www.sciencedirect.com/science/article/pii/016578369400342T

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Yang, T., Ren, J. S., Kooijman, S. A., Shan, X., & Gorfine, H. (2020). A dynamic energy budget model of Fenneropenaeus chinensis with applications for aquaculture and stock enhancement. Ecological Modelling, 431, 109186.
https://www.sciencedirect.com/science/article/pii/S030438002030257X

For younger individuals reared in captivity, see:
Kong, J., Yan, Y., Lu, X., Luan, S., Meng, X., Dai, P., ... & Luo, K. (2020). Integrative phenotypic and gene expression data identify myostatin as a muscle growth inhibitor in Chinese shrimp Fenneropenaeus chinensis. Scientific reports, 10(1), 1-9.
https://www.nature.com/articles/s41598-020-61382-8

Also known as Farfantepenaeus duorarum.

Ramírez-Rodríguez, M., & Arreguín-Sánchez, F. (2000). Growth of pink shrimp Farfantepenaeus duorarum (Burkenroad, 1939) in Campeche Sound, Mexico. Crustaceana, 1263-1272.
https://www.jstor.org/stable/20106398?seq=1

According to the Mexican government (2013), the mean weight of farmed P. duorarum shrimps is 12 g.
Government of Mexico (2013). 4.1. Camarón Rosado del Golfo de México. Diario Oficial, September 9, 47-49.
https://www.gob.mx/cms/uploads/attachment/file/308075/04camaron_rosado.pdf

Saloman (1965) provides weights for "bait" shrimps.
Saloman, C. H. (1965). Bait Shrimp (Penaeus Duorarum) in Tampa Bay, Florida: Biology, Fishery Economics, and Changing Habitat (No. 18). US Fish and Wildlife Service. See pp. 9-10.
https://books.google.es/books?id=A4KaP-NT-o8C&lpg=PP5&ots=KZc8CSGVS8&dq=%22Penaeus%20duorarum%22%20%22total%20weight%22&hl=ca&pg=PA11#v=onepage&q=%22Penaeus%20duorarum%22%20%22weight%22&f=false

Petit (1970) registered much higher weights for this species. Although this animal can reach a large size (up to 236 mm, see Holthius, 1980), that does not seem to be usual.
Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e09.pdf
Petit, P. (1970). Rélation longueur céphalothoracique-poids total chez Penaeus duorarum (Burkenroad) en Côte d'Ivoire. Documents Scientifiques, Centre de Recherches Océanographiques, Abidjan, 1(2), 49-51.
http://aquaticcommons.org/7938/1/Vol_I-2-3c.pdf

Zupo, V., Lumare, F., & Bisignano, V. (2016). Comparative Study of the Gut Contents of Penaeus japonicus Bate 1888 (Decapoda: Penaeidae) In Semi-Intensive Culture and In Brackish Water Wild Environment. Journal of Aquaculture & Marine Biology, 4(6), 00100. doi: 10.15406/jamb.2016.04.00100
http://medcraveonline.com/JAMB/JAMB-04-00100.pdf

Alava, V. R. (1993). Effect of dietary phospholipids and n-3 highly unsaturated fatty acids on ovarian development of Kuruma prawn. 日本水産学会誌 [Nippon Suisan Gakkaishi], 59(2), 345-351.
https://www.jstage.jst.go.jp/article/suisan1932/59/2/59_2_345/_pdf

This species is also known as Melicertus kerathurus.

Estimates based on:

Kücükdermenci, A., & Lok, A. (2012). An investigation on ovarian development of grooved shrimp Melicertus kerathurus in Izmir Bay, Turkey. Marine Biological Association of the United Kingdom. Journal of the Marine Biological Association of the United Kingdom, 92(3), 531-538.
https://www.proquest.com/docview/962213596?pq-origsite=gscholar&fromopenview=true

Turkmen, G., & Yilmazyerli, H. (2006). Some biological aspects of Melicertus kerathurus (Forskål, 1775)(Decapoda, Penaeidae) inhabiting Izmir Bay (Aegean Sea), Turkey. Crustaceana, 583-591.
https://www.researchgate.net/profile/Gurel-Turkmen/publication/233591898_Some_biological_aspects_of_Melicertus_kerathurus_Forskal_1775_Decapoda_Penaeidae_inhabiting_Izmir_Bay_Aegean_Sea_Turkey/links/5f61c8b64585154dbbd57593/Some-biological-aspects-of-Melicertus-kerathurus-Forskal-1775-Decapoda-Penaeidae-inhabiting-Izmir-Bay-Aegean-Sea-Turkey.pdf

Udoinyang, E. P., Amali, O., Iheukwumere, C. C., & Ukpatu, J. E. (2016). Length-weight relationship and condition factor of seven shrimp species in the artisanal shrimp fishery of Iko river estuary, southeastern Nigeria. International Journal of Fisheries and Aquatic Studies, 4(2), 109-114.
https://www.fisheriesjournal.com/archives/2016/vol4issue2/PartB/4-1-70.pdf

Note that the mean weight of sexually mature females is significantly higher (see Kücükdermenci & Lok, 2012). Mean weights were estimated also considered reported lengths of this species, according to Holthuis (1980).

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Cuesta et al. (2006) report weights for young individuals:
Cuesta, J. A., González-Ortegón, E., Rodríguez, A., Baldó, F., Vilas, C., & Drake, P. (2006). The decapod crustacean community of the Guadalquivir Estuary (SW Spain): seasonal and inter-year changes in community structure. In Issues of Decapod Crustacean Biology (pp. 85-95). Springer, Dordrecht.

According to the study cited above, mean weight of captured animals fluctuates between 27 and 31 g (see table 2.3.). Therefore, the overall mean weight would be 29 g. However, the same source describes that this species weight varies greatly (see table 2.2.). In light of that, I decided to assign to the general mean weight a margin of error or +/-10g.

Beckmann, C. L., Hooper, G. E., & Noell, C. J. (2014). West Coast Prawn Penaeus (Melicertus) latisulcatus Fishery 2012-13. Fishery Assessment Report to PIRSA Fisheries and Aquaculture. South Australian Research and Development Institute (Aquatic Sciences), Adelaide. SARDI Publication No. F2007/000772-6. SARDI Research Report Series No. 808. Retrieved from https://www.pir.sa.gov.au/__data/assets/pdf_file/0014/232340/West_Coast_Prawn_Fishery_2012-13_-_FINAL.pdf

For juveniles reared in captivity see:
Le, V. K., Fotedar, R., & Kumar, M. S. (2013). Effects of feeding rates on the growth, water quality and nutrient budget of western king prawn (P enaeus latisulcatus K ishinouye) reared in recirculating aquaculture systems. Aquaculture Research, 44(7), 1110-1119.
https://onlinelibrary-wiley-com.sire.ub.edu/doi/pdf/10.1111/j.1365-2109.2012.03120.x?casa_token=RxpQeyEtnMQAAAAA:HCBEgrb0swY8GMmRUXTWIdlbGfcBwvEdMzJnmqYu06Kj0p4ZfYftaSo8P1sVnZFyI2ufOlbqZb99xVJl

Van Khoi, L., & Fotedar, R. (2010). Effects of stocking density on the nutrient budget and growth of the western king prawn (Penaeus latisulcatus Kishinouye) in a recirculating aquaculture system. Aquaculture Research, 41(10), e624-e633.
https://onlinelibrary-wiley-com.sire.ub.edu/doi/pdf/10.1111/j.1365-2109.2010.02580.x?casa_token=K-Hi6BIQBzMAAAAA:IrlJWpTNWqF3I98wnqbf-lZXLFvGFmbE4RwbwvZ8u5ESF5MS_M9JR55PxYQxTQj_MvWM9OwQthuv_gjI

Based on:

Hatje, E., Minniti, G., Stewart, M. J., Neuman, C., Knibb, W., & Katouli, M. (2016). First description of ‘Chalky back’phenomenon in banana prawns (Fenneropenaeus merguiensis) and its possible association with Vibrio and Photobacterium species. FEMS microbiology letters, 363(4).
https://academic-oup-com.sire.ub.edu/femsle/article/363/4/fnw019/1846857

Niamaimandi, N., & Zarshenas, G.-A. (2014). Economic valuation of stock enhancement of banana prawn (Fenneropenaeus merguiensis) in the Strait of Hormuz. Fishery Bulletin, 113(1), 40–46. doi:10.7755/fb.113.1.4
https://spo.nmfs.noaa.gov/sites/default/files/niamaimandi.pdf

For younger individuals see:
Beard, T. W., Wickins, J. F., & Arnstein, D. R. (1977). The breeding and growth of Penaeus merguiensis de Man in laboratory recirculation systems. Aquaculture, 10(3), 275–289. doi:10.1016/0044-8486(77)90008-4

Zacharia, S., & Kakati, V. S. (2002). Growth and survival of Penaeus merguiensis postlarvae at different salinities. The Israeli Journal of Aquaculture – Bamidgeh 54(4), 2002, 157-162. https://evols.library.manoa.hawaii.edu/bitstream/handle/10524/19059/54_4_Kakati.pdf?sequence=1

Based on:
Data provided by fishcount.oug.uk.

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/AC477E09.pdf

For younger individuals:
Li Y, Zhou F, Ma Z, et al. Length-weight relationship and condition factor of giant tiger shrimp, Penaeus monodon (Fabricius, 1798) from four breeding families. Springerplus. 2016;5(1):1279. Published 2016 Aug 8. doi:10.1186/s40064-016-2979-6
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4977241/

Still, note that the weight of individuals of this species seems to vary greatly. Primavera et al. (1998) state they can weight up to 170 grams. However, this seems to be the case of sexually mature animals; see:
Debnath, P., Karim, M., & Belton, B. (2014). Comparative study of the reproductive performance and White Spot Syndrome Virus (WSSV) status of black tiger shrimp (Penaeus monodon) collected from the Bay of Bengal. Aquaculture, 424, 71-77.
https://www.sciencedirect.com/science/article/pii/S0044848613006911

Kannan, D., Thirunavukkarasu, P., Ashwinikumar, S. N., & Shettu, N. (2015). Studies on maturation, spawning and hatching wild of shrimp Penaeus monodon Fabrics, 1798 collected from east coast of India. Journal of Aquaculture & Marine Biology, 2(5), 40-48.
https://medcraveonline.com/JAMB/JAMB-02-00040.pdf

Primavera, J. H., Parado-Estepa, F. D., & Lebata, J. L. (1998). Morphometric relationship of length and weight of giant tiger prawn Penaeus monodon according to life stage, sex and source. Aquaculture, 164(1-4), 67-75.
https://www.sciencedirect.com/science/article/pii/S004484869800177X

FAO. (2020). Report of the FAO/CECAF Working Group on the Assessment of Demersal Resources – Subgroup North Nouakchott, Mauritania, 2–10 December 2019 / Rapport du Groupe de travail FAO/COPACE sur l’évaluation des ressources démersales – Sous-groupe Nord Nouakchott, Mauritanie, 2–
10 decembre 2019. CECAF/ECAF 20/83. Rome. https://doi.org/10.4060/cb1539b. See p. 370.
http://www.fao.org/3/cb1539b/cb1539b.pdf

Also known as Litopenaeus occidentalis.

I was only able to find information about mean weights for sexually mature animals: Alfaro, J., Palacios, J. A., Aldave, T. M., & Angulo, R. A. (1993). Reproducción del camarón Penaeus occidentalis (Decapoda: Penaeidae) en el Golfo de Nicoya, Costa Rica. Revista de biología tropical, 563-572. https://tropicalstudies.org/rbt/attachments/volumes/vol41-3A/29_Alfaro_Penaeus_occidentalis.pdf

Given this lack of information, I assumed that the mean weight for P. occidentalis is equal to that of L. vannamei, given that both species belong to the same genus and reach a similar maximum length. In this regard, see:

Palomares, M. L. D., & Pauly. D. (Ed.) 2021. Litopenaeus occidentalis (Streets, 1871). Western white shrimp. SeaLifeBase. Retrieved from https://www.sealifebase.ca/summary/Litopenaeus-occidentalis.html

Palomares, M. L. D., & Pauly. D. (Ed.) Litopenaeus vannamei (Boone, 1931). Whiteleg shrimp. SeaLifeBase. Retrieved from https://www.sealifebase.ca/summary/Litopenaeus-vannamei.html

Estimated mean weights based on reported mean lenghts of captured animals, and also on data for other species of the same genus.

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Leite Jr, N. O., & Petrere Jr, M. (2006). Growth and mortalities of the pink-shrimp Farfantepenaeus brasiliensis Latreille, 1970 and F. paulensis Pérez-Farfante 1967 in southeast Brazil. Brazilian Journal of Biology, 66(2a), 523-536.
https://www.scielo.br/j/bjb/a/7LBWLKqy8js74Nh45csRNpy/?lang=en&format=pdf

Peixoto, S., Soares, R., Wasielesky, W., Cavalli, R. O., & Jensen, L. (2004). Morphometric relationship of weight and length of cultured Farfantepenaeus paulensis during nursery, grow out, and broodstock production phases. Aquaculture, 241(1-4), 291-299.
https://www.sciencedirect.com/science/article/pii/S0044848604004685?casa_token=SP4CJcJy0M8AAAAA:tBWVI8LolxJUo05Hqf3_ijNjNb4miSF5VEHdl5i_KKpeFtbWgXJego7WuQZcwQG5yPuxq2x-cV0

Based on dry weight (adjusted) provided by Chu et al. (1995), and mean weight of other species of similar length.

Chu, K. H., Chen, Q. C., Huang, L. M., & Wong, C. K. (1995). Morphometric analysis of commercially important penaeid shrimps from the Zhujiang estuary, China. Fisheries research, 23(1-2), 83-93.
https://www.sciencedirect.com/science/article/pii/016578369400342T

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Estimate based on data provided by:
Freire, M. C. S., Freire, K. M. F., Rosa, L. C., & Bomfim, C. N. C. (2019). Estrutura populacional e morfometria do camarão branco Litopenaeus schmitti (Burkenroad, 1936) capturado pela pesca artesanal em Sergipe, Brasil. Tropical Oceanography, 47(1), 1-16.
https://periodicos.ufpe.br/revistas/TROPICALOCEANOGRAPHY/article/view/242992

Much higher weights are reported for sexually mature animals:
Ramos, L., Espejo, M., Samada, S., & Pérez, L. (1995). Maturation and reproduction of pond‐reared Penaeus schmitti. Journal of the world Aquaculture Society, 26(2), 183-187.
https://onlinelibrary-wiley-com.sire.ub.edu/doi/abs/10.1111/j.1749-7345.1995.tb00242.x

For farmed animals, see:
Fernández de Alaiza García Madrigal, R. (2018). Biologia comparativa e características zootécnicas do camarão-branco. Doctoral dissertation. Federal University of Paraná, Curitiba. Retrieved from https://www.prppg.ufpr.br/siga/visitante/trabalhoConclusaoWS?idpessoal=29217&idprograma=40001016008P4&anobase=2018&idtc=1304

Madrigal, R. F. D. A. G., Silva, U. D. A. T. D., & Ballester, E. L. C. (2020). Zootechnical performance and interaction between Penaeus schmitti Burkenroad, 1936 and Penaeus vannamei Boone, 1931 reared under laboratory conditions. Latin american journal of aquatic research, 48(3), 342-356.
https://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000300342&lang=pt

Estimate based on:

Arshadi, A., Kamali, A. A., Matinfar, A., Zakipour, R. E., & Zare, H. (2009). Growth Model of Penaeus Semisulcatus in a Semi-Intensive Culture in Boushehr Heleh Site. New Technologies in Aquaculture Development (Journal of Fisheries), 3(2), 29-36. https://www.sid.ir/en/journal/ViewPaper.aspx?id=180003

Maheswarudu, G., Radhakrishnan, E. V., Arputharaj, M. R., & Mohan, S. (2011). Growth performance of the green tiger prawn Penaeus semisulcatus De Haan in cages in the Gulf of Mannar off Mandapam, southeast coast of India. Asian Fisheries Science, 24, 100-114.
https://core.ac.uk/download/pdf/33019786.pdf

Seidman, E. R., & Issar, G. (1988). The Culture of Penaeus semisulcatus in Israel. Journal of the World Aquaculture Society, 19(4), 237–247. doi:10.1111/j.1749-7345.1988.tb00785.x
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1749-7345.1988.tb00785.x

For younger individuals raised in captivity see:
Hussain, A., Mohammad, D. A., Ali, E. M., & Sallam, W. S. (2015). Growth performance of the green tiger shrimp Penaeus semisulcatus raised in biofloc systems. J Aquac Mar Biol, 2(5), 00038.
https://medcraveonline.com/JAMB/growth-performance-of-the-green-tiger-shrimp-penaeus-semisulcatus-raised-in-biofloc-systems.html

Estimate based on:

Velazquez, M. P., & Gracia, A. (2000). Fecundity of Litopenaeus setiferus, Farfantepenaeus aztecus and F. duorarum, in the Southwestern Gulf of Mexico. Gulf and Caribbean Research, 12(1), 1-9.
https://core.ac.uk/download/pdf/301286269.pdf

Sandifer, P. A., Hopkins, J. S., Stokes, A. D., & Browdy, C. L. (1993). Preliminary comparisons of the native Penaeus setiferus and Pacific P. vannamei white shrimp for pond culture in South Carolina, USA. Journal of the World Aquaculture Society, 24(3), 295-303.
https://d1wqtxts1xzle7.cloudfront.net/49620559/Preliminary_Comparisons_of_the_Native_Pe20161015-9624-hjz7tn.pdf?1476542117=&response-content-disposition=inline%3B+filename%3DPreliminary_Comparisons_of_the_Native_Pe.pdf&Expires=1622745872&Signature=HlA2oAolUPiDYH7ArlyWR55zjDxRfahO0SiemsCai3-uWCgycSkHJgBflQXWMJu4Leu4xBgW97IYPuyjVf7HSqGXiXgeOFAT2~~S7paah5OR3E7mkJkvvnf5VWpGL50-zLwx4Qe1yubznHro-PtqLFW1NHtN1ZWjFshOjDA1f3hxD00LH543HDt7W9lKDxNCl0ahLDUYfe3kx0Jd2-gCazX6No4v1PvERQLKxuPfEd9M7N-advHYxl4oZG05glsHg4IV7yd5OWS12NEczWea7xxBiduXgdqNmJr3uYn8pZZ7MedEnU8nAOuUeP4HyOAPIW~ATTmAu0cTyWZsZXestw__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA

Tigue, T. A., & Feller, R. J. (1989). Feeding of juvenile white shrimp Penaeus setiferus: periodic or continuous?. Marine ecology progress series, 227-233.
https://www.int-res.com/articles/meps/52/m052p227.pdf

Lower weights are reported for individuals captured in rivers–who are typically younger:
Udoinyang, E. P., Amali, O., Iheukwumere, C. C., & Ukpatu, J. E. (2016). Length-weight relationship and condition factor of seven shrimp species in the artisanal shrimp fishery of Iko river estuary, southeastern Nigeria. International Journal of Fisheries and Aquatic Studies, 4(2), 109-114.
https://www.fisheriesjournal.com/archives/2016/vol4issue2/PartB/4-1-70.pdf

This genus includes a large number of species. The estimated average weights are based on the average weights of the most commercially relevant species reviewed above.

Estimate based on:
Goyard, E., Patrois, J., Peignon, J. M., Vanaa, V., Dufour, R., Viallon, J., & Bedier, E. (2002). Selection for better growth of Penaeus stylirostris in Tahiti and New Caledonia. Aquaculture, 204(3-4), 461-468.
https://www.sciencedirect.com/science/article/pii/S0044848601008316?casa_token=_5TZUqSOgQcAAAAA:rDVrbfH_fgDNScgQBpm3L3gvCUVY9SM15JIXgnMZdQWCIFWu7XMyaUNzC9U1sH1Le_A_PbbR0FI

Luong, T. C., Hochard, S., Royer, F., Lemonnier, H., & Letourneur, Y. (2014). Feasibility of polyculture of blue shrimp Litopenaeus stylirostris and goldlined rabbitfish Siganus lineatus in a mesocosm system. Aquaculture, 433, 340-347.
https://archimer.ifremer.fr/doc/00198/30968/29344.pdf

Note that much higher mean weights are reported for sexually mature animals:
Chamberlain, G. W., & Lawrence, A. L. (1981). Maturation, reproduction, and growth of Penaeus vannamei and P. stylirostris fed natural diets. Journal of the World Mariculture Society, 12(1), 207-224.
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1749-7345.1981.tb00256.x

According to fishcount.org.uk the mean weight of L. vannamei fluctuates between 11 and 26 g. FAO (in Briggs, 2009) describes an average weight of 16-26 g for shrimp farmed under super-intensive conditions. It is likely that animals that live in less crowded environments reach higher weights–see e.g., Romero Dextre, 2018.
Other sources describes much higher weights for sexually mature animals captured from the wild (56 g for females and 40 g for males, according to Vaca & Alfaro, 2000; see also Moss & Moss, 2006). Thus, I assume that mean weight of wild individuals is higher than estimates for farmed shrimps of this species.

Briggs, M. (2009). Penaeus vannamei. In Cultured aquatic species fact sheets. Retrieved from http://www.fao.org/fishery/docs/DOCUMENT/aquaculture/CulturedSpecies/file/en/en_whitelegshrimp.htm

Moss, D. R., & Moss, S. M. (2006). Effects of gender and size on feed acquisition in the Pacific white shrimp Litopenaeus vannamei. Journal of the World Aquaculture Society, 37(2), 161-167.
https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1749-7345.2006.00022.x

Romero Dextre, J. A. (2018). Texto: Diseño de criaderos y cultivo del langostino (Litopenaeus vannamei). Callao, Peru: National University of Callao. Retrieved from http://repositorio.unac.edu.pe/bitstream/handle/UNAC/4056/Romero%20Dextre_IF_2018.pdf?sequence=1&isAllowed=y

Vaca, A. A., & Alfaro, J. (2000). Ovarian maturation and spawning in the white shrimp, Penaeus vannamei, by serotonin injection. Aquaculture, 182(3-4), 373-385.
https://edepot.wur.nl/196947

See also:
Zelaya, O., Rouse, D. B., & Davis, D. A. (2007). Growout of Pacific white shrimp, Litopenaeus vannamei, stocked into production ponds at three different ages. Journal of the World Aquaculture Society, 38(1), 92-101.
https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1749-7345.2006.00077.x

Mean weight = 7,59 according to:
Suquele, P. & Calautti, D. (2001). Informe sobre el estado de la pesquería de Langostino y Camarón en la. Ría de Bahía Blanca. Enero de 2001. Estudios y estadísticas de pesquerías artesanales y comerciales de la Provincia de Buenos Aires. Buenos Aires: Ministry of Agrarian Affairs. Government of the Province of Buenos Aires.
https://www.maa.gba.gov.ar/pesca1/images/archivos/informes_biologicos/estuariales_y_marinos/langostino/langostinocamaronenero01.pdf

For juveniles, see:
Harán, N., Mallo, J., & Fenucci, J. (2004). Efecto de la densidad sobre el crecimiento y el desarrollo del petasma en langostinos juveniles Pleoticus muelleri (Decapoda, Penaeoidea). Investigaciones marinas, 32(1), 11-18.
https://scielo.conicyt.cl/scielo.php?pid=S0717-71782004000100002&script=sci_arttext

According to Bates (1957 in Holthuis, 1980: 4), it is estimated that there are on the average 26 to 30 individuals of this species to the pound (mean weights from 15.1 to 17.4 g). Other sources describe shrimp of this species weighing around 25-26 g (see Gracia et al.’s (2010) data for cruise 2; Gracia & Vázquez-Bader (2020)–72.7 kg / 2772 individuals).

An industry website claims there are 9 to 12 individuals (apparently, captured in Florida, in the US) to the pound (mean weights from 37 to 50 g). But this source also states that these shrimp typically weigh 25 g (Very Meaty, 2022).

Gracia, A., Vázquez-Bader, A. R., Lozano-Alvarez, E., & Briones-Fourzán, P. (2010). Deep-water shrimp (crustacea: penaeoidea) off the Yucatan Peninsula (Southern Gulf of Mexico): a potential fishing resource?. Journal of Shellfish Research, 29(1), 37-43. : http://dx.doi.org/10.2983/035.029.0124

Gracia, A., & Vázquez-Bader, A. R. (2020). Deep-Water Penaeoid Shrimp of the Southern Gulf of Mexico Upper Slope: Distribution, Abundance, and Fishery Potential. In M. E. Hendrickx (ed.) Deep-Sea Pycnogonids and Crustaceans of the Americas (pp. 237-256). Springer, Cham. https://www.researchgate.net/profile/Vladimir-Puentes-Granada/publication/349724354_New_Records_of_Crustaceans_Collected_Between_670_and_3400_m_in_the_Colombian_Caribbean/links/60ec895d0859317dbddb0c4e/New-Records-of-Crustaceans-Collected-Between-670-and-3400-m-in-the-Colombian-Caribbean.pdf#page=245

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Very Meaty (2022). How Many Royal Red Shrimp In A Pound?. Retrieved from https://www.verymeaty.com/fresh-meat/crustaceans/shrimp/how-many-royal-red-shrimp-in-a-pound/

Estimate based on:

Arrasate-López, M., Tuset, V. M., Santana, J. I., García-Mederos, A., Ayza, O., & González, J. A. (2012). Fishing methods for sustainable shrimp fisheries in the Canary Islands (North-West Africa). African Journal of Marine Science, 34(3), 331-339.
https://www.academia.edu/22685793/Fishing_methods_for_sustainable_shrimp_fisheries_in_the_Canary_Islands_North_West_Africa_

González, J. A., Pajuelo, J. G., Triay-Portella, R., Ruiz-Díaz, R., Delgado, J., Góis, A. R., & Martins, A. (2016). Latitudinal patterns in the life-history traits of three isolated Atlantic populations of the deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae). Deep Sea Research Part I: Oceanographic Research Papers, 117, 28-38.
https://www.sciencedirect.com/science/article/pii/S0967063716300942

Also of interest:
Castriota, L., Falautano, M., Romeo, T., Florio, J., Pelusi, P., Finoia, M. G., & Andaloro, F. (2004). Crustacean fishery with bottom traps in an area of the southern Tyrrhenian Sea: species composition, abundance and biomass. Mediterranean Marine Science, 5(2), 15-22.
https://core.ac.uk/download/pdf/188027251.pdf

Mean length:
Rodríguez, M. G., Esteban, A., & Gil, J. P. (2000). Considerations on the biology of Plesionika edwardsi (Brandt, 1851)(Decapoda, Caridea, Pandalidae) from experimental trap catches in the Spanish western Mediterranean Sea. Scientia Marina, 64(4), 369-379.
http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/778

Arrasate-López, M., Tuset, V. M., Santana, J. I., García-Mederos, A., Ayza, O., & González, J. A. (2012). Fishing methods for sustainable shrimp fisheries in the Canary Islands (North-West Africa). African Journal of Marine Science, 34(3), 331-339.
https://www.academia.edu/22685793/Fishing_methods_for_sustainable_shrimp_fisheries_in_the_Canary_Islands_North_West_Africa_

Torres, M. A., Vila, Y., Silva, L., Acosta, J. J., Ramos, F., Palomares, M. L. D., & Sobrino, I. (2017). Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain). Aquatic Living Resources, 30, 12.
https://sapientia.ualg.pt/bitstream/10400.1/13157/1/alr160080.pdf

The lower bound is the minimum weight for males reported by Chakraborthy et al. (2015) and Chakraborty & Kuberan (2021). Note that n=26, but such a lower bound is relatively close to the average weight minus the standard deviation (0.79 g) of individuals captured with a fine mesh reported by Da Graça (2008). The upper bound is the highest mean weight found between different types of traps, plus standard deviation, in Da Graça (2008).

Chakraborty, R. D., Kuberan, G., Purushothaman, P., Maheswarudu, G., & Baby, P. K. (2015). A new record of deep-sea caridean shrimp Plesionika narval (Decapoda: Pandalidae) from the south west coast of India. Marine Fisheries Information Service; Technical and Extension Series, (225), 22-22. http://eprints.cmfri.org.in/10966/1/225-10.pdf

Chakraborty, R. D., & Kuberan, G. (2021). Notes on Plesionika alcocki (Anderson, 1896) and Plesionika narval (Fabricius, 1787) from the southern coast of India. International Journal of Fisheries and Aquatic Studies, 9(1), 281-287. https://doi.org/10.22271/fish.2021.v9.i1d.2412
Graça, G. N. S. N. D. (2008). Aspectos da biologia do Camarão Plesionika narval (Fabricius, 1787) nos Açores (Doctoral dissertation). https://sapientia.ualg.pt/bitstream/10400.1/363/1/TeseMestrado_GoncaloGraca_23780.pdf

Also known as Aristaeopsis edwardsiana (Johnson, 1867).
Only one specific source on the weight of this species was found:
García-Isarch, E., Burgos, C., Sobrino, I., Mendes de Almeida, A., Barri, I., Assau, V., ... & Joaquim Gomes, M. (2009). Informe de la campaña de evaluación de recursos demersales de la ZEE de Guinea Bissau a bordo del B/O Vizconde de Eza “Guinea Bissau 0810”. Instituto Español de Oceanografía (IEO) and Centro de Investigaçao Pesqueira Aplicada (CIPA).
http://www.repositorio.ieo.es/e-ieo/bitstream/handle/10508/11006/GUINEA%20BISSAU%200810.pdf?sequence=1&isAllowed=y

However, given the length described in other sources (see Palomares & Pauly, 2021), it is likely that, in different locations, the average weight of captured animals of this species is considerably lower. Similarly, Lorance (2013) reports that most captured individuals are sexually immature and, therefore, smaller animals than those described by García-Isarch et al. (2009). Therefore, I adjusted the values suggested by García-Isarch et al. (2009) to the average weight of other species of similar size–e.g., L. occidentalis.

Lorance, P. (2013). Management and monitoring of deep-sea fisheries and stocks. Aquatic Living Resources, 26(4), 289-291.
https://wwz.ifremer.fr/deepfishman/content/download/35241/file/deepfishman_227390_D2_1.pdf

Palomares, M. L. D., & Pauly. D. (Ed.) 2021. Aristaeopsis edwardsiana (Johnson, 1867). Scarlet shrimp. SeaLifeBase. Retrieved from https://www.sealifebase.ca/summary/Aristaeopsis-edwardsiana.html

Estimate based on:

Ballesteros Alcívar, F. X. (2020). Variabilidad morfológica de las especies Protrachypene precipua Y Xiphopenaeus riveti en las localidades de Limones y Camarones, Provincia de Esmeraldas, Ecuador (Undergraduate thesis). Pontifical Catholic University of Ecuador.
https://repositorio.pucese.edu.ec/bitstream/123456789/2050/1/BALLESTEROS%20ALC%C3%8DVAR%20FREDDY%20XAVIER%20.pdf

Suárez Gómez, S. C. (2017). Estructura poblacional de Protrachypene Precipua (CAMARON POMADA) frente a Esmeraldas: implicaciones para el manejo pesquero (Bachelor's thesis). University of Guayaquil.
http://repositorio.ug.edu.ec/bitstream/redug/29650/1/Tesis%20Camar%c3%b3n%20Pomada.pdf

No specific data was found for this genus. The mean weight here estimated is based on length descriptions of Sclerocrangon communis provided by Holthuis (1980).

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

The family Sergestidae is comprised of about 85 species divided between six genera (Omori, 1983). The genus Acetes is commercially important, mainly for subsistence captues (Amin et al., 2009).

Amin, S. N., Arshad, A., Siraj, S. S., & Bujang, J. S. (2009). Population structure, growth and length weight relationship of sergestid shrimps (Acetes spp.) from the coastal waters of Malacca, Peninsular Malaysia. Sains Malaysiana, 38(2), 159-169.
https://www.researchgate.net/profile/S-M-Nurul-Amin/publication/26571160_Population_Characteristics_Length-Weight_and_Length-Length_Relationships_of_Acetes_vulgaris_Decapoda_Sergestidae_in_the_Coastal_Waters_of_Pontian_Johor_Peninsular_Malaysia/links/0c9605330f69d2e7e1000000/Population-Characteristics-Length-Weight-and-Length-Length-Relationships-of-Acetes-vulgaris-Decapoda-Sergestidae-in-the-Coastal-Waters-of-Pontian-Johor-Peninsular-Malaysia.pdf

Omori, M. (1983). Abundance assessment of micronektonic sergestid shrimp in the ocean. Biological Oceanography, 2(2-4), 199-210.
https://www.tandfonline.com/doi/pdf/10.1080/01965581.1983.10749458

I was unable to find specific mean weights for this species. The figures here provided are based on the typical species length (according to Palomares & Pauly, 2021), other descriptions provided by Arreguín-Sánchez (1981) and Cobb et al. (1973), and findings for another species (S. penicillata) of the same genus (see López-Martínez et al., 1999; López-Martínez et al., 2002).

Arreguín-Sánchez, F. (1981). Diagnosis de la pesquería de camarón de roca (Sicyonia brevirostris Stimpson, 1871) de Contoy, Q. Roo, México. Ciencia pesquera, 1(2), 1-85.
https://www.inapesca.gob.mx/portal/documentos/publicaciones/cienciapesquera/CP02/CP02-02.pdf

Cobb, S. P., Futch, C. R., & Camp, D. K. (1973). The rock shrimp, Sicyonia brevirostris Stimpson, 1871 (Decapoda Penaeidae).
http://aquaticcommons.org/694/1/3.1.pdf

López-Martínez, J., Arreguín-Sánchez, F., Nevárez-Martínez, M. O., Morales-Azpeitia, R., Chávez-Ortiz, E. A., & Alcántara-Razo, E. (2002). Aspectos biológicos y pesqueros del camarón roca Sicyonia penicillata (Lockington, 1879) del golfo de California. Contributions to the study of east Pacific crustaceans. Universidad Autónoma de México, México DF.
https://d1wqtxts1xzle7.cloudfront.net/49197242/Potential_yield_of_a_rock_shrimp_stock_S20160928-23015-19eqyvs.pdf?1475120967=&response-content-disposition=inline%3B+filename%3DPotential_Yield_of_a_Rock_Shrimp_Stock_S.pdf&Expires=1623099254&Signature=KQT-PWOKarQOwfcY1Jlyi0l6AoWgn5tI87LDs9hrlUBGGv3~2vJngyhIHT~mrm2DlXYn3ECTq2ygrVkQ~QXbjI7IV29CAMqihT8EU0VHi6GDyigGYWASbxIDhVFZ5cHNabHVwMR~YUXVzFyf1xkjjwP94PTd49L7YJCvPi0H4YMd4omwaYcxzaYnQqFnHWeP9TsmF-kjVpXtHtPkvqJspiRj-N6AN6hp7xdWca3C9rZUB1jvkKPikOXUqTfHJ9Ic7M2F5K3VD3glA9nKlrteHbbmdG1HvwzVNtIXUbwuV~KycpAydD5rlCmJlMwusSQ0ayQeGvIkQ0PyeUDGZyl4wA__&Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA

López-Martínez, J., García-Domínguez, F., Alcántara-Razo, E., & Chávez, E. A. (1999). Periodo reproductivo y talla de madurez masiva del camarón de roca Sicyonia penicillata (Decapoda: Sicyoniidae) en Bahía Kino, Sonora, México. Revista de Biología Tropical, 47(1-2), 109-117.
https://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77441999000100012

Palomares, M. L. D., & Pauly. D. (Ed.) 2021. Sicyonia brevirostris Stimpson, 1871. Brown rock shrimp. SeaLifeBase. Retrieved from https://www.sealifebase.ca/summary/Sicyonia-brevirostris.html

I was unable to find specific data for this species. Given that this species length is similar to what is reported for S. brevirostris (Farfante, 1985), I assumed that the mean weight of both species might be equal.
Nevertheless, note that Holthuis (1980) estimates lower lengths for this species than those informed by Sunada (1984). Apparently, mean sizes (and therefore, weight) greatly varies depending on the fishing pressure on the species population in a given area.

Farfante, I. P. (1985). The rock shrimp genus Sicyonia (Crustacea: Decapoda: Penaeoidea) in the eastern Pacific. Fishery Bulletin, 83(1), 1-79.
https://spo.nmfs.noaa.gov/sites/default/files/pdf-content/1985/831/perez.pdf

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Sunada, J. S. (1984). Spot Prawn (Pandalus platyceros) and Ridgeback Prawn (Sicyonia ingentis) fisheries int he Santa Barbara Channel. CalCOFl Rep., Vol. XXV, 100-104.
http://calcofi.org/publications/calcofireports/v25/CalCOFI_Rpt_Vol_25_1984.pdf

I was unable to find specific data for this species. Holthuis (1980) reports that its length is similar to that of S. brevirostris. Therefore, I assume that the mean weight of both species is similar.
Still, note that Villalobos-Rojas and Wehrtmann (2018) registered higher lengths for S. agassizii than what Holthuis (1980) and Wehrtmann and Echeverría-Sáenz (2007) describe.

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Villalobos-Rojas, F., & Wehrtmann, I. S. (2018). Reproductive biology of the commercially exploited kolibri shrimp, Solenocera agassizii (Decapoda: Solenoceridae), from the Pacific coast of Costa Rica, with considerations for its management. Revista de Biología Tropical, 66(1-1), S92-S107.
https://revistas.ucr.ac.cr/index.php/rbt/article/view/33264

Wehrtmann, I. S., & Echeverría-Sáenz, S. (2007). Crustacean fauna (Stomatopoda: Decapoda) associated with the deepwater fishery of Heterocarpus vicarius (Decapoda: Pandalidae) along the Pacific coast of Costa Rica. Revista de Biología Tropical, 55(Su1), 121-130.
https://www.redalyc.org/pdf/449/44909916.pdf

Lower bound is mean weight minus SD provided by Torres et al. (2017). The upper bound was estimated considering Torres et al.'s (2017) mean weight plus SD (2.7g), and lengths reported in this and other studies.
Regarding the latter, Torres et al.'s (2017) work (n=121) found average (1.4 cm) and max lengths (2 cm) significantly below to maximum length reported by another source (11.2 cm according to Holthuis, 1980). However, Torres et al.'s (2017) findings are aligned with the lengths described by Demestre & Abelló (1993; up to 3 cm) Company & Sardà (2000; up to 2.7 cm)–all conducted in the Mediterranean Sea, where these shrimps are most captured.
Demestre & Abelló (1993) state that the bulk of the population size is between 1.5 and 2.5 cm. The upper found was adjusted accounting for likely bigger individuals than those reported by Torres et al. (2017).

Company, J. B. & Sardà, F. (2000). Growth parameters of deep-water decapod crustaceans in the Northwestern Mediterranean Sea: a comparative approach. Marine Biology, 136(1), 79-90. https://doi.org/10.1007/s002270050011

Demestre, M., & Abello, P. (1993). Growth and distribution of Solenocera membranacea (Risso, 1816) (Decapoda: Dendrobranchiata) in the northwestern Mediterranean Sea. Scientia Marina 57(2-3): 161-166. https://digital.csic.es/bitstream/10261/28720/1/Demestre_et_al_1993.pdf

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Torres, M. A., Vila, Y., Silva, L., Acosta, J. J., Ramos, F., Palomares, M. L. D., & Sobrino, I. (2017). Length–weight relationships for 22 crustaceans and cephalopods from the Gulf of Cadiz (SW Spain). Aquatic Living Resources, 30, 12. https://doi.org/10.1051/alr/2017010

Estimate based on this study–the sample consists of wild individuals:
Ahmed, M. A. O. (2017). Sexual Size Dimorphism On Some Penaeid Shrimp In Sudanese Red Sea. Journal of Agricultural, Environmental and Veterinary Sciences, 3(1), 54-59.
https://www.ajsrp.com/journal/index.php/jaevs/article/view/1115

Note that the weight of sexually mature individuals is typically higher:
Hossain, M. Y., & Ohtomi, J. (2008). Reproductive biology of the southern rough shrimp Trachysalambria curvirostris (Penaeidae) in Kagoshima Bay, southern Japan. Journal of Crustacean Biology, 28(4), 607-612.
https://academic-oup-com.sire.ub.edu/jcb/article/28/4/607/2548196

Ronquillo, J. D., & Saisho, T. (1995). Developmental stages of Trachypenaeus curvirostris (Stimpson, 1860)(Decapoda, Penaeidae) reared in the laboratory. Crustaceana, 68(7), 833-863.
https://brill.com/view/journals/cr/68/7/article-p833_4.xml

Estimates based on:
Fernandes, L. P., Silva, A. C., Jardim, L. P., Keunecke, K. A., & Di Beneditto, A. P. M. (2011). Growth and Recruitment of the Atlantic Seabob Shrimp, Xiphopenaeus kroyeri (Heller, 1862) (Decapoda, Penaeidae), on the Coast of Rio De Janeiro, Southeastern Brazil. Crustaceana, 84(12-13), 1465–1480. doi:10.1163/156854011x605765 

Reis Jr, J. J. D. C., Freire, K. M. F., Da Rosa, L. C., Barreto, T. M. R. D. R., & Pauly, D. (2019). Population dynamics of Atlantic seabob Xiphopenaeus kroyeri (Decapoda: Penaeidae) off the state of Sergipe, north-eastern Brazil. Marine Biological Association of the United Kingdom. Journal of the Marine Biological Association of the United Kingdom, 99(1), 143-153.

Another source reports mean weights significantly lower for this species. Still, note that such weights are for dry individuals:
Santos, R. A. P. D., Silva, A. R. D., Moraes, I. R. R. D., Antunes, M., Lopes, A. E. B., Costa, R. C. D., & Castilho, A. L. (2020). Gonadosomatic index and weight/length relationship in females of three penaeoidean shrimps impacted by fisheries on the southeastern Brazilian coast. Nauplius, 28.
https://www.scielo.br/j/nau/a/mH5rF86PstgGW8TsxzpDnZt/?lang=en#

The mean weights reported by Reis et al. (2019) are compatible with mean lenght described by other sources for the same species:
Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Castro et al. (2016 in Ballesteros, 2020) stated that the mean weight of this species is 2.32 g, while other sources (Mora-Lara, 1973; Puentes et al., 2014: 127) report much higher weights.
Similarly, Holthuis (1980) states that the maximum total length of X. riveti is 17 cm, but notes that in Peru, the species is "caught but discarded because of its small size" (Lindner, 1957 in Holthuis, 1980: 58).
Mora-Lara (1973), for his part, affirms that the weight of this species varies widely.

Ballesteros Alcívar, F. X. (2020). Variabilidad morfológica de las especies Protrachypene precipua Y Xiphopenaeus riveti en las localidades de Limones y Camarones, Provincia de Esmeraldas, Ecuador (Undergraduate thesis). Pontifical Catholic University of Ecuador.
https://repositorio.pucese.edu.ec/bitstream/123456789/2050/1/BALLESTEROS%20ALC%C3%8DVAR%20FREDDY%20XAVIER%20.pdf

Holthuis, L. B. (1980). Shrimps and prawns of the world. An annotated catalogue of the species of interest to fisheries, 1. Rome: FAO. Retrieved from http://www.fao.org/3/ac477e/ac477e00.htm

Mora-Lara, C. O. (1973). Biology and fishery of the' Titi'shrimp Xiphopenaeus Riveti on the Pacific Coast of Colombia, South America (Doctoral dissertation, Memorial University of Newfoundland).
https://research.library.mun.ca/7619/3/Mora-Lara_Orlando.pdf

Puentes, V., Escobar, F. D., Polo, C. J., & Alonso, J. C. (2014). Estado de los Principales Recursos Pesqueros de Colombia–2014. Serie Recursos Pesqueros de Colombia–AUNAP. Oficina de Generación del Conocimiento y la Información, Autoridad Nacional de Acuicultura y Pesca–AUNAP. Retrieved from
https://aunap.gov.co/wp-content/uploads/2016/05/ESTADO-DE-PRINCIPALES-RECURSOS-PESQUEROS-EN-COLOMBIA-2014-version-digital.pdf

Estimate based on the mean weights for the species of the genuses Trachypenaeus (now known as Trachysalambria) and Xiphopenaeus covered above. Note that several species of the genus Xiphopenaeus have not yet been described and named (Gusmão et al., 2006).

Gusmão, J., Lazoski, C., Monteiro, F. A., & Solé-Cava, A. M. (2006). Cryptic species and population structuring of the Atlantic and Pacific seabob shrimp species, Xiphopenaeus kroyeri and Xiphopenaeus riveti. Marine Biology, 149(3), 491-502.
https://link.springer.com/article/10.1007%2Fs00227-005-0232-x