Photo. (c) 2019 John Nevill.
Photo. (c) 2022 BSS/MCSS.
Photo. (c) 2019 John Nevill.
Scientific Name: Acanthurus leucocheilus
English Name: Palelipped surgeonfish
Creole Name: Sirizyen blan
French Name:
IUCN Red List Status: Least Concern (LC)
Description:
Dorsal spines: 9; Dorsal rays: 24-26; Anal spines: 3; Anal rays: 23-25.
A dark brown to blackish surgeonfish without fine longitudinal lines. Front of upper lip orange; rest of mouth and narrow zone around it white and a white band across the
chest. It exhibits a large black spot above the axil of the pectoral fin and a pale band on the outer third of the pectoral fin. Dorsal and anal fins have a fine electric
blue edge. Dorsal fin has an orange posterior portion on the distal part of the last 6 rays. Caudal fin in adults is deeply lunate with long lobes. It carries a peduncular
spine with white sheath the socket rimmed in black. The caudal fin base is encircled by a white ring. There is an indistinct metallic blue band adjacent to the lunate
terminal edge of the caudal fin. Juveniles are brown with a yellow caudal fin.
Size:
Maturity: Lm unknown. Range unknown. Max Length: 48cm SL.
Habitat and Ecology:
Reef associated species occurring singly or in groups typically in outer reef areas between 3-40m depth. Grazer/detrivore feeding over sand on algae and detritus.
Fishery Status:
This species is not protected or subject to fishery regulations. It is caught in the fish trap fishery, but is a rare component of the catch.
Notes:
In water photo courtesy Eleanor Brighton and Chris Mason-Parker (c) 2022 Blue Safari Seychelles/Marine Conservation Society, Seychelles. Photograph taken at Alphonse group 2022.
References:
Abesamis, R. et al. (2012). Acanthurus leucocheilus. The IUCN Red List 2012: e.T177994A1515329. http://dx.doi.org/10.2305/IUCN.UK.2012.RLTS.T177994A1515329.en. (10/10/18).
Bray D.J. Acanthurus leucocheilus in Fishes of Australia http://fishesofaustralia.net.au/home/species/4960 (10/10/18)
Froese, R. & D. Pauly. Eds. (2018). Fishbase. Acanthurus leucocheilus. https://www.fishbase.de/summary/Acanthurus-leucocheilus.html (10/10/18)
Randall, J.E. (2001). Surgeonfishes of Hawaii and the World. ISBN: 1-56647-561-9
Citation:
Nevill, J.E.G. & Mason-Parker, C. (2019). Acanthurus leucocheilus, Palelipped surgeonfish. www.seatizens.sc. https://seatizens.sc/species/acanthurus-leucocheilus-herre-1927-2/ (Edited 11/06/22).
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