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Acanthurus triostegus (Linnaeus, 1758)

Convict surgeonfish
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Native range
This map was computer-generated and has not yet been reviewed.
Acanthurus triostegus   AquaMaps   Data sources: GBIF OBIS
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Acanthurus triostegus
Picture by Malaer, P.

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: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).

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

; marin récifal; profondeur 0 - 90 m (Ref. 9710), usually 0 - 90 m (Ref. 27115).   Tropical; 26°N - 36°S, 25°E - 85°W (Ref. 57245)

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

Indo-Pacific: throughout the region except for the seas around the Arabian Peninsula. Eastern Pacific: lower Gulf of California to Panama, including the Revillagigedo, Cocos, Clipperton, and Galapagos islands.

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 8.8  range ? - ? cm
Max length : 27.0 cm TL mâle / non sexé; (Ref. 3145); common length : 17.0 cm TL mâle / non sexé; (Ref. 9267)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 9; Rayons mous dorsaux (Total): 22-26; Épines anales 3; Rayons mous anaux: 19 - 22. Body olivaceous gray, with 4 vertical stripes (1 stripe on head across the yellow eye; 1 on caudal peduncle); shading to white ventrally, often with a sharp line of demarcation. Sharp, forward-pointing, erectile spine on each side of caudal peduncle which folds down into a groove. Scales minute. Teeth with denticulations on sides and top. Gill rakers 18-22 in anterior row, 19-24 in posterior row.

Biologie     Glossaire (ex. epibenthic)

Adults occur in lagoon and seaward reefs with hard substrate; young abundant in tide pools (Ref. 3145, 48637). Benthopelagic (Ref. 58302). Often feeding near freshwater run-offs where certain algae grow on rocks that are grazed (Ref. 48637). Occasionally form schools; feed on filamentous algae in large aggregations. During spawning, clouds of eggs and sperm are preyed upon by eagle rays which are often present during spawning. Form spawning aggregations (Ref. 27825). Size of metamorphosis from post-larva stage to juvenile is 3.2 cm (Ref. 9267). Utilized as a food fish (Ref. 7364). Minimum depth reported taken from Ref. 27115.

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

Form spawning aggregations (Ref. 27825).

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

Randall, J.E., 1956. A revision of the surgeonfish genus Acanthurus. Pac. Sci. 10(2):159-235. (Ref. 1920)

Statut dans la liste rouge de l'IUCN (Ref. 119314)

  Préoccupation mineure (LC) ; Date assessed: 04 May 2010

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Reports of ciguatera poisoning (Ref. 4690)





Utilisations par l'homme

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

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Niveau trophique (Ref. 69278):  2.8   ±0.35 se; Based on food items.
Résilience (Ref. 69278):  Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.35; tm=1-2).
Vulnérabilité (Ref. 59153):  Low vulnerability (16 of 100) .
Catégorie de prix (Ref. 80766):   Medium.