I got him about 3 days ago and he's looked healthy. my problem now is that when I woke up this morning, his fins were a little cut up. Now they are even worse. I don't have any other predator type fish in the tank, he's the only fish other than a neon goby. I have a skunk cleaner shrimp and a blood shrimp. Can someone tell me what may be causing this? Thanks. Here are some pictures.