You ever get a craving for catfish but don't have any in the freezer so you run down to the store and buy some? Don't.
Chances are it came from Vietnam - they're a major producer of farm raised catfish. Stay the fuck away from it. Wrench sent me a link to a video showing the nasty fucking conditions that they're raised in - it's a wonder Americans aren't dying like flies.
Check it out for yourself.