Hi guys I got a lemonpeel angelfish on Friday. I have noticed since friday it has an area on its dorsal fin near the rear that looks like a splinter logged in the fin. Its not red, its not moving or getting larger. It is only on one side and is a little raised looking. Its may a little darker yellow than the rest of the fin. The fish has no symptoms, swim and eats normally. At first I just passed it off as a nip by another fish, but now I am not so sure. What do you guys think? I have checked the disease forums and dont see anything that seems like it could be it, b/c the angel has NO symptoms of anything.