Shorefishes of the Tropical Eastern Pacific Online Information System
Updated: 06/12/2008  

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Perciformes  -  Acanthuridae  -  Naso  -  Naso brevirostris

Naso brevirostris

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snout blunt
horn long
grey, head - spots, back - thin bars

C: short, blunt, white



Naso brevirostris (Cuvier, 1829)

Spotted unicornfish

Body elongate, oval; snout short, almost vertical; adult with long, broad-based tapering horn before eye, (a bump on forehead of juveniles); 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, 27-29; pectoral 16-17 rays; pelvics I, 3; 2 pairs of cutting keels on plates on narrow tail base; tail fin edge straight to slightly rounded, without filaments; scales very small, rough; lateral line complete.

Olive-brown to grey; many small dark spots on head and lower body, many thin dark bars on upper body; tail whitish with dark blotch at base.

        Size: 60 cm.

        Habitat: reefs and rocky shores; juveniles in sheltered habitats; adults in mid-water around exposed reef fronts.

Depth: 0-45 m; juveniles usually 2-20 m; adults usually 5-30 m.

An Indo-Pacific species; recorded as a vagrant in the Galapagos Islands.

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