I've had this purple tip seabae for about 4 months now. He has about tripled in size and is about 7" in diameter now. For about a week now, his mouth is opened to about the size of a dime and stayed that way. The clowns still host him, he's sticky and still accepts the food the clowns throw at him. Is there something I can do. Does his mouth being open this long mean he's dying? Would appreciate any advise. I'm worried it will croak and crash the system.