im not going to try it because now thinking it over my 3 small discuss will feel lonely in a 55g by them selves with out my 6 other big guys. u no....im just going to put gar's aro'z ray's maybe a tig. working on getting another ray and some aro'z =D. and yes any large catfish will eat a fish if it can fit in its mouth. also i forget my hybrid once also ate a peace of broken pottery. spit it out later on it the day.thnx every one