I have a Bellus Angel and noticed just now that he is not using his left fin nearly as often as his right. He's also very jumpy (like he's jumping from spot to spot). Is his left fin broken? Will it get better? Should I add some Kaniplex in the tank? I am fairly certain that earlier today his fin was fine (of course now that he isn't using it, I am second guessing myself as to whether or not he was in all actuality using it). When I say not using his left fin nearly as often, I mean rarely ever but sometimes he will a little. I haven't seen any of the other fish pick on him at all. Thanks in advance for any help!