Recent articles on sustainable bluefin tuna:https://www.forbes.com/sites/keshiahannam/2016/08/14/the-most-sustainable-way-to-produce-pacific-bluefin-tuna/#106974c174df
https://asia.nikkei.com/Business/Business-Trends/Fully-farmed-bluefin-tuna-ready-for-wider-sales-beyond-Japan