well i have one i thinke he i smaller then 5 oir just about. they are really nice some times if you got to the lfs the have some. i feed mine blood worms and guppies(onec and then not often) but he is cool i hd mine in a 10gal by itself he was doing awesome trying looking up some pi9cs on googel. but mine stays on the bottom but when i go up to the tank he goes up to the top wanting food