I am generally careful about the food I but and I try to buy organic and local foods. The other day I saw frozen wild-caught salmon for a VERY good price - so, since I love salmon, I bought it. As I was getting ready to cook it I looked closely at the package - the contents were listed as chum salmon and it was from China. What was it I bought and, aside from the fact that China is hardly local, is this something I should buy again? The taste was fine - I am concerned about possible contaminants and sustainability.