Thanks for the advise. Yeah, I do need to make something to protect it, even if temporary, it will open about a half an inch is all and never come out very far.
Guess I'll probably have to buy and try a fish trap. Been putting my net in while feeding, hoping he'll get used to it and allow me to catch him, getting a little closer, but I think he's just to fast.
Oh and it's a 80 gallon, so no grouper or anything huge...Besides, I don't want to kill him (at least not most of the time), it's not his fault I stuck him in a little glass box.