Well you shouldn't be. I have a picture of him in my gallery, he's quite small right now.
I know his mouth is a lot bigger than it looks but I'm not too worried about it. If for some reason I can't keep him when he gets too big I have people that will glady take him.
I do appreciate your concern, though. It's nice to talk to people who think of fish as more than a piece of decor. You'd be surprised how many people try to set up tanks with out any cocern for the well being of the fish. Either because they're misinformed or just don't care. It's sad.