The main problem with the farm-raised fish that you buy is that the feed was an artificial formula & the chemicals used for the Antibiotics of the fish. Farm-raised fish has existed for eons in asia and africa (Ayu, Carp, Tilapia, & Gourami, mussels, snails, crayfish, freshwater lobster), and it is nutritionally fine. So whats the Diff? Their fish get fed essentially organic food products ie: crop residues, insects, worms & grubs, livestock excrement, etc. NOT commercially prepared feeds from a factory laced with synthetic vitamins and chemicals.