My wife is Chinese. She likes to buy fish from the Chinese supermarkets where they keep them live in the fish tanks until you buy them.. My question is, does anyone know how healthy these fish are to eat? They are cheap, and they are fresh, but I know other things effect the quality of farm-raised fish, like what they feed them and the quality of the water they are kept in.. And I don't think the Chinese are more concerned about price than they are about ensuring the health and safety. They just like it because it's fresh and cheap.. Does anyone have any knowledge about whether it is healthier to eat these fresh but maybe unhealthy fish, or would it be better to buy fish fillets from a reputable fish market?