i have one, they are aggresive when in a small space like a peice of driftwood wont be goo enough. they dont come out during day unless mega hungry,mine eats bloodworms,beefheart and shrimp pellets,they grow mega slow....very resiliend suckers check on youtube for davisbrehm 2 aquariums, it shows my 30 about 1year ago ,i have a 125 gallon now with the sun cat also on youtube