Fish might feel pain. I'm personally on the side that they probably do. But I also don't care, because pain is part of life. The life of a wild animal IS pain. Pain is part of their daily existance, and animals tend to have a high tolerance for it. I've seen salmon who have had their bellies bitten out by seals swimming around like nothing happened, until they keel over dead. If they do feel pain, it sure must not bother them much.