Cool. I think I'll stick with three, but I am starting to worry about my crowntail... I got him 7 months ago, and I guess I wasn't feeding him enough, and his fins got really thin and whispy... then I started plumping him up, and although his fins have gotten thicker, the crowns on his tail are just breaking off. I don't know why and I am doing everything I can to make it stop, but oh well... If he doesn't make it, I am definitely getting another one.