Acanthurus tennentii (Günther, 1861)
Acanthurus tennentii (Günther, 1861)
Genus: ,

Scientific Name: Acanthurus tennentii

English Name: Doubleband surgeonfish

Creole Name: Siriziyen koray

French Name: Chirurgien fer à cheval

IUCN Red List Status: Least Concern (LC)


Dorsal spines: 9; Dorsal rays: 23-24; Anal spines: 3; Anal rays: 22-23.

Brown to light tan body with black thick double band (horseshoe mark in smaller specimens) on shoulder behind operculum. A broad black zone on chin which can turn blue in 
breeding colours with a blue-green extension above the mouth. Caudal spine surrounded with black oval edged in electric blue/green. Caudal fin with bright white posterior 
edge and black submarginal line. Dorsal and anal fins with basal orange band, black submarginal band and electric blue outer edge.


Maturity: Lm unknown. Range unknown. Max Length: 31cm TL; common length: 25.0 cm TL.

Habitat and Ecology:

Inhabits lagoon and seaward reefs, depth range 1-40 m, usually 3-25m. Solitary or in groups. Sometimes occurs in small shoals. Grazes on benthic algae.

Fishery Status:

This species is not protected or subject to fishery regulations. It is caught in the fish trap fishery.






Froese, R. & D. Pauly. Eds. (2018). FishBase.  (14/10/18)
Nevill, J. (2013). A Species Identification Guide for Commonly Caught Fish in the Seychelles Near-Shore Artisanal Fishery. GOS/UNDP/GEF.
Randall, J.E. (2001). Surgeonfishes of Hawaii and the World. ISBN: 1-56647-561-9
Russell, B. et al. (2012). Acanthurus tennentii. The IUCN Red List 2012: e.T177997A1516035. (14/10/18).


Nevill, J.E.G. & Mason-Parker, C. (2019). Acanthurus tennentii, Doubleband surgeonfish. (edited 14/06/22).

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