My (black?) bullhead seems to be very happy in his 30 gallon with a very large goldfish (roughly 8 inches including tail) and a shubunkin (slightly smaller than the goldfish.) The goldfish's tail makes him roughly 2 inches bigger than him. He's also been kept with sunfish, but an unknown disease ...

My bullhead (brown or black, keep switching my opinion on which one it is) loves shrimp pellets, tropical fish flakes, and gold fish flakes. (S)he seems to do fine on all three, though the shrimp pellets are never his sole diet.

I really want some more bullheads