Why do Glo Fish Glow?

What is a Glo Fish?

GloFish® fluorescent fish were originally bred to help detect environmental pollutants. By adding a natural fluorescence gene to the fish, scientists hope to one day quickly and easily determine when a waterway is contaminated. The first step in developing a pollution-detecting fish was to create fish that would be fluorescent all the time. Scientists soon realized the public's interest in sharing the benefits of this research, a process which lead to GloFish® fluorescent fish[1].


Videos for a second viewing of Glo Fish


  1. Log into Realtime Board using your TTSD Google account.
  2. In your group, discuss, research, analyze and answer the following questions concerning Glo Fish.  Use Realtime Board to keep track of your discussion and record your thoughts about the questions below; include your answers to these in your board.
  3. Include on your “whiteboard” pictures, videos, images, written descriptions (by you and not copied and pasted).  


  1. A source is a picture, video, website, article, etc. that provides information. If the source is used directly, it should be quoted and provided a citation.  If a source is summarized, it should still be provided a citation.
  2. Quality Sources: Quality sources are not Billy Bob’s 5th grade project, ask.com answers, wikipedia (though it can be a good place to start), and random answers from a google search.  Quality sources are articles for reputable newspapers (New York Times, Oregonian, etc), scientific journals, science particular websites (Science Daily News).  If you’re not sure, ask.
  3. Citations should used as described in 1 above.  To create a citation, Mr. Rott suggests Easybib which can help to simplify the process.  However, you still will have to search for and input some of the information.  Instructions of how to use Easybib can be found here.


What causes the glowing?

How are “normal” fish now glowing?

Cool, so what else could this be applied to?

Turn In:

  1. Ensure all group member names on your board.
  2. Click “Share” and select “Link.”  Paste a copy of the Board’s link in the Google Assignment and turn in.

[1] "GloFish Fluorescent Fish FAQ." GloFish. Yorktown Technologies, n.d. Web. 29 Oct. 2012.