I got my bichir when he was maybe 3 inches long from a guy who no longer could keep him. That was back in June/July now he is about 5-6 inches long and eats frozen bloodworms. I am concerned though because for the past few weeks whenever he eats he gets these strange bubbley lumps in his stomach and it kindof contorts him.. I feed him half a cube every other night or so.. so i can't see it being that he eats too much.. this just really concerns me. Anyone have any ideas as to what could be wrong?