IUCN threat status:

Least Concern (LC)

Comprehensive Description

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  Common names: surgeonfish (English), cirujano (Espanol), navajón (Espanol)
Acanthurus nigricans (Linnaeus, 1758)

Whitecheek surgeonfish,     Goldrimmed surgeonfish

Body an elongate oval; head profile steep; eye high on the head; mouth small, protrusible, low on head; teeth on jaws fixed, with flattened, notched tips, 8-28 on each jaw; gill rakers 17-19; dorsal rays IX, 28-31; anal rays III, 26-29; pectoral rays 16; pelvic fin I, 5; a single depressible spine fits into a groove on the side of the base of the tail; tail fin concave; scales very small, rough; lateral line complete.

Black or blue-black; with large white blotch below eye; narrow white band encircling mouth; a yellow band, becoming broader posteriorly, at base of dorsal and anal fins; tail fin white with narrow yellow bar posteriorly.

Size: largest specimen, 22 cm.

Habitat: usually seen in shallow water of exposed coral reefs or rocky shores.

Depth: 0-70 m.

Eastern Indian Ocean and the tropical Pacific, mainly at islands; in the eastern Pacific it is known from the tip of Baja California, the SW and SE Gulf of California, southern Mexico, Costa Rica to Ecuador and all the offshore 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

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