My 5" Powder blue Tang has a 1/4" cut across his belley on the right side. What do i do to help? I dont know if he cut it on coral rock or if my yellow tang speared him. The yellow has been fistey with him lately even though the PBT is bigger. Is there anything I can do or do i just hope for the best. I have a full reef and no possible way of catching him to QT. HELP!!!!