Blue-ringed Angelfish

Found singly, or in pairs, in and around bays, caves, harbours, under jetties, and around wrecks, over coastal, coral, and rocky reefs.
Juveniles found in shallow waters amongst filamentous algae over dead coral and rock.

Angelfish are usually brightly coloured with highly compressed bodies.
Some live in "harems" others in pairs, they can be highly territorial and make a loud drumming sound when alarmed.