IUCN threat status:

Least Concern (LC)

Comprehensive Description

Read full entry


  Common names: unicornfish (English), pez-unicornio (Espanol)
Naso hexacanthus (Bleeker, 1855)

Sleek unicornfish

Body elongate, oval; upper and lower body profiles symmetrically convex; forehead without horn; mouth small, protrusible, low on head; teeth small, conical, tips slightly depressed & either smooth or with multiple small points; dorsal fin VI, 27-29; anal II, 27-30; pectoral 17-18 rays; pelvics I, 3; 2 pairs of cutting keels on plates on narrow tail base; tail margin straight, without filaments, concave in juveniles;  scales very small, rough; lateral line complete.

Blue-grey to brown above, shading to yellowish brown ventrally; rear margin of operculum and preopercle often dark; tongue black; dorsal olive; tail blue grey, broad olive margin; anal and pelvics yellow-olive; pectoral blue grey, dark margin; courting males  can abruptly develop upper head and upper front of body blue, blue lines and spots on front flank.

Size: 75 cm.

        Habitat: reefs and rocky shores; juveniles on reef crests in sheltered habitats; adults in midwater around exposed reef fronts.

Depth: 0-150 m; juveniles usually 5-35 m; adults usually 10-40 m.

An Indo-Pacific species recorded as a vagrant at Clipperton and Cocos Islands.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

Belongs to 0 communities

This taxon hasn't been featured in any communities yet.

Learn more about Communities


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!