When i started out with my ornate bichir , i had two guppies, a dory,african butterfly fish, and a albino tiger barb. Soon i was down to the cory and the barb and butterfly. Then i was down to the barb and butterfly, he tried to eat the cory but couldnt swallow him all the way and just left him dead in the middle of the tank. That was when he was about 5 inches. Now the only original fish left is the butterfly wich he doesnt seem to mess with. I didnt see him eat the barb but he had been tryin for a couple months but the barb was too fast, i guess that barb came around the wrong corner one time too many >