A striking and useful algae grazer, the Tuxedo Urchin is a fantastic addition to the marine clean-up crew. It helps control film algae and nuisance algae on rockwork and aquarium surfaces while adding real character to the reef. Peaceful and generally reef safe, but it may pick up loose shells, frags or small pieces of rubble for camouflage, so corals should be secured. Best kept in an established aquarium with plenty of natural algae to graze.