My Bangaii's top fin seems messed up but I can't figure out what it is. Its looked about the same for the past 2 ish weeks and it doesn't seem to be getting worse. Im assuming its something like fin rot but not sure. Its also been acting a bit weird with my other two clownfish lately. They aren't attacking him but whenever they get near each other the Bangii will kinda lean like 45 degrees on its side at the clownfish. I think its a submissive thing. Anything to be concerned about with either of those things?