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Ctenochaetus binotatus Randall, 1955

Twospot surgeonfish
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Native range
This map was computer-generated and has not yet been reviewed.
Ctenochaetus binotatus   AquaMaps   Data sources: GBIF OBIS
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Image of Ctenochaetus binotatus (Twospot surgeonfish)
Ctenochaetus binotatus
Picture by Randall, J.E.

Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Perciformes (Perch-likes) > 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.

Environment: milieu / climate zone / depth range / distribution range Écologie

; marin récifal; profondeur 8 - 53 m (Ref. 1602), usually 10 - 50 m (Ref. 27115).   Tropical; 24°N - 34°S, 29°E - 122°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

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

Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm TL mâle / non sexé; (Ref. 5213)

Description synthétique Morphologie | Morphométrie

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).

Biologie     Glossaire (ex. epibenthic)

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).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur : Randall, John E. | Collaborateurs

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. 119314)

  Préoccupation mineure (LC) ; Date assessed: 07 May 2010

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Other (Ref. 1602)





Utilisations par l'homme

Aquarium: Commercial
FAO(Publication : search) | FishSource | Sea Around Us

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Écosystèmes
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Noms communs
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Écotoxicologie
Reproduction
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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Niveau trophique (Ref. 69278):  2.0   ±0.00 se; Based on food items.
Résilience (Ref. 69278):  Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Vulnérabilité (Ref. 59153):  Low vulnerability (23 of 100) .