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Acanthuriformes (Surgeonfishes) >
Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; saumâtre récifal; profondeur 0 - 30 m (Ref. 9710), usually 2 - 15 m (Ref. 27115). Tropical; 23°C - 28°C (Ref. 27115); 30°N - 24°S, 39°E - 143°W
Indo-Pacific: East Africa, including the Mascarene Islands (Ref. 37792) to the Tuamoto Islands, north to Ryukyu Islands, south to southern Great Barrier Reef. Not occurring in the Red Sea.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 18.4  range ? - ? cm
Max length : 45.3 cm FL mâle / non sexé; (Ref. 125599); poids max. publié: 2.7 kg (Ref. 125599)
Épines dorsales (Total) : 9; Rayons mous dorsaux (Total) : 25 - 28; Épines anales: 3; Rayons mous anaux: 23 - 26. Color in life dark brown without lines on body or spots on head (one phase is purplish grey); horizontal black band behind upper gill opening absent on juveniles <6 cm SL; elongate purple band may be present anterior to dorsal origin; caudal fin brown; outer third of pectoral fin pale. Species with gizzard-like stomach.
Body shape (shape guide): short and / or deep; Cross section: compressed.
Occurs in clear lagoon and seaward reefs around isolated coral heads. Solitary or in small groups (Ref. 90102). Prefers sandy bottoms of bays and lagoons rather than the coral reefs like most other Acanthuridae. The species is sometimes poisonous (Ref. 4795). Caught with nets (Ref. 30573). Minimum depth reported taken from Ref. 128797.
Probably spawn in pairs (Ref. 240).
Randall, J.E., 1987. Three nomenclatorial changes in Indo-Pacific surgeonfishes (Acanthurinae). Pac. Sci. 41(1-4):54-61. (Ref. 1921)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Poisonous to eat (Ref. 4795)
Utilisations par l'homme
Pêcheries: commercial; Aquarium: Commercial
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Estimations basées sur des modèles
Température préférée (Réf.
123201): 25.3 - 29.3, mean 28.4 °C (based on 2616 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02291 (0.01965 - 0.02671), b=2.95 (2.91 - 2.99), in cm total length, based on LWR estimates for this species (Ref.
93245).
Niveau trophique (Réf.
69278): 3.0 ±0.40 se; based on food items.
Generation time: 1.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
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 to moderate vulnerability (26 of 100).
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Nutriments (Ref.
124155): Calcium = 52.9 [22.4, 157.8] mg/100g; Iron = 0.704 [0.257, 1.764] mg/100g; Protein = 18.9 [17.9, 20.0] %; Omega3 = 0.119 [0.053, 0.257] g/100g; Selenium = 16.6 [5.6, 60.7] μg/100g; VitaminA = 34.8 [9.9, 119.3] μg/100g; Zinc = 2.52 [0.80, 4.71] mg/100g (wet weight);