Territorial species with a haremic mating system: each male holds a large territory which overlaps with the territories of a few females. The male mates with females within his territory at dusk during full or new moons.
Mainly feeds on hard corals, especially Acropora spp..
Body white and elongate.
Chevron pattern on body.
A vertical black bar runs through the eyes.
In adults, tails are black with a yellow margin at the posterior end.
In juveniles, the yellow margin on the tail is thicker than in adults.
At night, two white blotches on the body becomes visible.