I just put in a new male dalmation molly and today I noticed that his side fin appears to be damaged and it looks like the other fish have been eating him... he is laying on his side, appears to be breathing fine, and swims really fast when I put a net near him. I have two adolescent mollies, and a couple female guppies in with him that are doing fine. I also have a couple of mystery snails. I don't want this poor dude to croak.