hi i wonder if any1 could help me i have 2 coral catsharks one is 17" lonog and the other is still a baby, i have recently noticed a lump just behind his jaw been tryin too look into it for a while but cant realy find anything please can some1 help me?!i have just recently brought the baby shark, my bigger shark is fine and eats about 5-6 sprats every couple of days and is fine. i dont understand wots gone wrong!