Paletail Unicornfish
Naso brevirostris
Paletail Unicornfish (Naso brevirostris) is a reef-associated surgeonfish of the Indo-Pacific that grazes on algae and drifts in small schools. Adults develop a forward-pointing bony bump and a strongly forked paletail, while juveniles are more subdued and less distinctive.
Identification points
- Prominent forward-pointing bony horn on the forehead in adults
- Very deep, strongly forked tail with pale trailing edge
- Long, slender unicornfish body with a small mouth and blue-gray coloration
Habitat
Coral and rocky reefs, reef flats, outer reef slopes, and lagoon edges in clear tropical marine waters; often seen in surge zones and along current-swept reef faces.
Bait notes
Not a common targeted game fish. If taken incidentally or where permitted, small strips of seaweed-style baits, algae-flavored offerings, or tiny soft plastics that mimic turf algae can draw strikes; it more often ignores typical meat baits.
Behavior
Mostly diurnal, swimming in loose groups and feeding on filamentous algae and benthic growth. It is a strong, active swimmer that uses the reef edge and open water near structure.
Caution
Marine reef fish may be subject to local harvest restrictions; check regulations. Like many large reef fish, consumption can carry ciguatera risk in some areas.
Fishing notes
Best approached by sight-fishing around reef edges with very small lures or fly patterns imitating algae scraps, but catches are usually accidental rather than intentional. Use light tackle and avoid heavy pressure on the reef.