Whitley's Sergeant
Abudefduf whitleyi
Whitley's Sergeant (Abudefduf whitleyi) is a small damselfish of tropical western Pacific reefs. It is usually seen in schools around shallow coral and rocky habitats, where it feeds on plankton and tiny benthic organisms.
Identification points
- Small, laterally compressed damselfish with a deep oval body
- Blue-gray to silvery body with darker vertical bars typical of sergeants
- Forked tail and a small mouth set low on the snout
Habitat
Shallow tropical reef flats, surge zones, and coral-rich or rocky areas near the coast, often over hard bottom with good current and plenty of cover.
Bait notes
Not a common game species. If targeted, small bits of shrimp, squid, or fish flesh on light tackle can take them; tiny sabiki-style jigs or micro soft plastics also work.
Behavior
Schooling, diurnal reef fish that forages in the water column and near the bottom on small zooplankton, algae, and benthic microfauna; typically wary around structure.
Caution
Reef-associated species may carry ciguatera risk in some tropical areas; avoid eating large individuals from known risky reefs and follow local consumption advisories.
Fishing notes
Use ultralight gear, small hooks, and fine leaders around shallow reef edges and current lines. Cast close to structure and retrieve slowly; they often bite opportunistically in small schools.