Fish ID: Longfin Bannerfish

Butterflyfish longfin bannerfish heniochus acuminatus upi
Family Butterflyfish (CHAETODONTIDAE)
species Heniochus acuminatus
size To 24cm
locality Inshore and outer reefs
behaviour Solitary or in pairs
range Indo Pacific

White body with two black bars down the whole body, either side of the white bar directly below the long dorsal filament; dorsal and tail fins are yellow, and black bar across the nape between the eyes.