I am just barely starting on this whole vegetarian thing, but farmed salmon, at this point, doesn't sound much better than beef to me. I try and verify my seafood choices on here now:
since so much seafood is now horribly unsustainably farmed and causes so much damage to the environment, OR has unhealthily high mercury levels. This may be a little weirdness of mine, though - I have a blind spot for sushi. I will only buy wild Alaskan salmon if at all, but I never ask the sushi chef where his fish comes from.
I'm trying to ease up on the fish now too though, has anyone got any good recommendations for a tasty brand of veggie burgers? We grilled portabella mushrooms last night and they were tasty but I am still looking for more options, this vegetarian thing is complicated!