I can't remember the exact name but does start with a m and yes he's never not eaten his hole life and he still stretches his mouth wide from time to time and it functions normal just grew in weird ?Droptopwop I think its a deformity not a dislocation then. if it continues to eat and grow then I would not euthanize it. Just keepan eye out and make sure it is not suffering. Other than the jaw its a beautifully bass! so is the other one. Do you know what species it is?