The Ocean Surgeonfish (Acanthurus bahianus) are frequently found in the western Atlantic Ocean and Caribbean. They have a brown or grey body with blue markings along the face and gills, as well as blue anal and caudal fins. They feed primarily on seaweed and algae, but also consume mysis, krill and other small crustaceans. They reach a maximum size of 14 inches and should be kept in an aquarium of at least 180 gallons. They do best if kept singly and may be semi-aggressive to tangs with a similar body shape.