Beware of the Bi-Color!!!!!! I'm a big fan, loved my guy and he was really entertaining, problem is that he loved to pick at my coral. Beat my brain star until it had a dead spot at least an inch long and wide, started going at my candy cane, nearly destroyed a head on my flower pot and started picking at my open brain. I declared war and finaly got him out. They don't mean it, but if anything has a thin film of algae, he'll start going to town and it doesn't matter if it's the glass, rock, or a $60.00 investment.