Stroll by any Whole Foods seafood counter and you will see color-coded fish: Green for fully sustainable, yellow for partially sustainable, and red for fish threatened by overfishing or grown on polluting fish farms. Buy a "green" fish and you eat guilt free, confident that you are doing your part to save the ocean and its inhabitants.
http://pakagri.blogspot.com/2011/10/sustainable-seafood-myth.html
http://pakagri.blogspot.com/2011/10/sustainable-seafood-myth.html