I eat Wal-Mart Tilapia and Salmon all the time, and have fed some to some of my problem feeders as well. Never researched it, but I agree with what was said about it all coming from the same sources, and don't always trust such things as "farm raised". Just because its "FR" doesn't mean that farm is in the US, or even a good clean source for that matter. But then again, I eat tons of Bluegill caught in neighborhood ponds, so I don't worry too much about it! If its fish and it smells good, I eat it!!! And don't get me started on how good sushi is!!!