Most farmed salmon are farmed in sea pens. They have infected wild salmon populations with disease, parasites and cross bred in some cases. This is in a country that has good regulations (Canada). Can you imagine what happens in countries with bad regulations or unenforced regulations? I grew up in Alaska, eating a lot of fish, and farmed fish kinda creep me out.
Personally, when I buy fish, I look for several things. First, I buy sustainable wild caught fish. This means nothing wild caught in Asia, because of their horrible fishing habits. Second, I will buy farmed fish, under certain circumstances, usually fish grown in the US or Canada. I almost never buy farmed fish from Asia or South American. Their environmental regulations, and fish growing conditions stink.
Personally, when I buy fish, I look for several things. First, I buy sustainable wild caught fish. This means nothing wild caught in Asia, because of their horrible fishing habits. Second, I will buy farmed fish, under certain circumstances, usually fish grown in the US or Canada. I almost never buy farmed fish from Asia or South American. Their environmental regulations, and fish growing conditions stink.