A short horn and blue-edged blades at the tail distinguish this reef grazer.
- Local names
- Ume
- Habitat
- Lagoon and reef
About this species
Body colour ranges from grey-green to brown. The forehead horn generally stops short of the tip of the snout. Blue lips and blue tail-base spines add colour, while adults develop a squared-off tail with a filament at each end.
It occurs alone or in small groups in exposed, coral-rich lagoon and outer-reef habitats. Leafy algae, particularly Sargassum, are important food. The regional guide reports a broad depth range, from about 1 to 180 m.
- Guide des poissons de Tahiti et ses îles, Indo-Pacific Fish conference Tahiti 2017, P. Bachet, T. Zysman, Y. Lefèvre, Au vent des îles
- DORIS - Naso unicornis
- FishBase - Naso unicornis
