This probably should go under the illness section but seeing as its a cat i was hoping to get some better responses. I have an ID shark that has what looks like a wart on his upper jaw. it hasnt seemed to change size/shape to much but it does turn red sometimes (like its inflammed). He was in a tank that was to small for him at the previous owners, so i was thinking its from rubbing/ hitting the tank at the previous owners but im not really sure. ideas?