Western Pacific: eastern Indian Ocean to Japan and Australia.

Large adults recognized by the rounded tail with pale margin. Has narrow dark bands and lacks peduncular spot that distinguishes this species form similar ones (Ref. 48636). Similar to A. vaigiensis and A. sexfasciatus but has more black bars.

Occurs singly or in small groups in inshore reef and lagoon environments. Feeds on algae, gastropods, and small crabs. Highly territorial.