My Altolamprologus Calvus appears to have swim bladder problems. In all the years I've kept fish I have never ran into this problem. He eat good and looks normal with the exception that he has a hard time getting off the bottom. He is active, but often lays on the bottom in a kind of curved position. It's not fish TB I've ruled that out and nothing else seems to fit the discription except swim bladder problems. Any body have any ideas as to what to treat with.