I noticed this morning that my Yellow Watchman's top fins are ratty. All his other fins are fine but his top one has a few ratty areas. Last week my 6 line was harrassing him a little but I turned the lights out for a while and I have not seen a problem since. They swim around each other with no problems now. My 2 clowns have never bothered him. He seems to be eating fine and hanging out in his usual caves. What could be wrong with him and do you think he will okay? I sure hope so...he's become quite a character in my tank!!