Aspect: Silver blue oval body with deep V- cut tail fin. Darker dorsal area stretches to upper part of tail fin, which the lower fin replicates. Population: Abundant. Notable feature: Mouth line distinctively raises from sides to snout . Environment: Shallow waters, often in groups around rocks. Behaviour: Can be approached, but constantly moves, and photographing diver often needs to be aware of urchins around which it often swims for protection.