Mikvin: While I am a looong ways from an expert, I do read a good bit on this and believe that the Omega 3 or 'good' fat in farm rose fish is roughly comparable to that in wild fish. I remember reading at least one comment that the beneficial effect on heart health far outweighs any highly theoretical adverse effect from the farmed fish. I also read that most of the pollutants are in the flesh and that the pollutants levels are well below federal standards.

Perhaps a more important question is why are allowing so much pollution in our waters. (As I understand it the pollutants in farm raised fish are from wild fish caught and ground into food.) We might want to ask why these forage fish carry such high levels of pollutants? I know there are health warnings about tuna, almost all fish in the Snake River reservoirs, and fish in Commencement Bay etc. etc. etc. Those who mock all the "tree huggers' who are trying to slow the flow of pollutants into our waters might want to consider how bad things are already.