I agree with you. "Fishes" sounds ignorant to me. Just a quick note to you, eyepod, "GreenWhBl is more erudite than I".Well, I thought about this and I don't think I would ever say "fishes" although GreenWhBl is more erudite than me I suppose. Maybe "there are several kinds of fish in the tank"
Eyepod's version would be correct to at least some prescriptivists, and is obviously just fine in real English. That really doesn't call for a "correction".Just a quick note to you, eyepod, "GreenWhBl is more erudite than I".