Aspect: Brown, brown-white moiré, but also light blue, but whatever the colour of the body always sports a blue anal fin and a blue tail blade, bot no vertical body bars. A distinct feature are its blue eyebrows. Population: Regularly abundant. Notable feature: Defends itself by swift tail movements to cut aggressor with its tail scalpel blades, reputed to be able to cut through a 5mm suit. Environment: Usually found in shallow, quiet waters (but also abundant on well-covered wrecks down to 40 metres), hovering over rocks or coral boulders in search of algae. Solitary or in schools mixing with other surgeonfishes. Behaviour: Will usually swim away when approached closer than two metres.
