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Acanthuriformes (Surgeonfishes) >
Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Ctenochaetus: Greek, kteis, ktenos = comb + Greek, chaite = hair (Ref. 45335); binotatus: Name from Latin 'bi' meaning two and 'notatus' meaning marked; referring to the black spots at the rear base of the dorsal and anal fins.
More on author: Randall.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin récifal; profondeur 0 - 60 m (Ref. 128797), usually 10 - 50 m (Ref. 27115). Tropical; 24°N - 34°S, 29°E - 122°W
Indo-Pacific: East Africa to the Tuamoto Islands, north to southern Japan, south to central New South Wales (Australia) and New Caledonia. Not known from the Red Sea, Gulf of Oman, the Gulf, the Hawaiian Islands, Marquesas, Rapa, Pitcairn Islands, and Easter Island.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 22.0 cm TL mâle / non sexé; (Ref. 5213)
Épines dorsales (Total) : 8; Rayons mous dorsaux (Total) : 24 - 27; Épines anales: 3; Rayons mous anaux: 22 - 25. Prominent black spot at the rear base of dorsal and anal fins; adults with a bluish ring around the eye (Ref 1602). Dorsal and anal fins dark brown. Caudal fin brown in adults, yellow in young. Edge of lips smooth. Upper teeth usually with 5 denticulations (not including tip). Anterior gill rakers 23-29 (Ref 42056).
Body shape (shape guide): short and / or deep.
Inhabits coral and rubble areas of deep lagoon and seaward reefs. Usually solitary, grazing on surface algae (Ref. 90102). Feeds by scooping film of detritus and unicellular algae (e.g. dinoflagellate Gambierdiscus toxicus) that produce ciguatera toxin making this species a key link in the ciguatera food chain (Ref. 1602, 48637). Caught with nets (Ref. 30573).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Randall, J.E and K.D. Clements, 2001. Second revision of the surgeonfish genus Ctenochaetus (Perciformes: Acanthuridae), with descriptions of two new species. Indo-Pac. Fish. (32):33 p. (Ref. 42056)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Utilisations par l'homme
Pêcheries: commercial; Aquarium: Commercial
Outils
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.03388 (0.02158 - 0.05321), b=2.93 (2.80 - 3.06), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Niveau trophique (Réf. 69278) |
2.0 ±0.00 se; based on food items. |
Résilience (Réf. 120179) |
Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.). |
Vulnérabilité de la pêche (Ref. 59153) |
Low vulnerability (23 of 100). 🛈 |
Catégorie de prix (Ref. 80766) |
Medium.
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Nutriments (Ref. 124155) |
Calcium = 34.7 [21.3, 57.7] mg/100g; Iron = 0.248 [0.133, 0.599] mg/100g; Protein = 18.1 [16.8, 19.3] %; Omega3 = 0.13 [0.08, 0.21] g/100g; Selenium = 21.9 [12.8, 39.9] μg/100g; VitaminA = 44.8 [10.4, 180.9] μg/100g; Zinc = 0.382 [0.283, 1.300] mg/100g (wet weight); based on nutrient studies. |