Yeah, I'd agree. A mates duck had the same thing, so he knocked it over the head with a lump of wood. There's not any cure as far as I know. Best of luck mate, Jim.It appears to be a rectal prolapse. See the following discussion for more info and treatment.
http://www.monsterfishkeepers.com/f...reat-protruding-intestine-out-of-ventral-area