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Acanthuriformes (Surgeonfishes) >
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 6 - 50 m (Ref. 37816), usually 30 - ? m (Ref. 9710). Tropical; 23°C - 29°C (Ref. 27115); 30°N - 24°S, 32°E - 179°E
Indo-West Pacific: Mozambique (Ref. 1920) and Maldives to the western Pacific.
Taille / Poids / Âge
Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL mâle / non sexé; (Ref. 2334)
Épines dorsales (Total) : 9; Rayons mous dorsaux (Total) : 26 - 28; Épines anales: 3; Rayons mous anaux: 25 - 26. Body brown; a round black spot at upper gill opening; dark blue line just below the bases of dorsal and anal fins. Dorsal fin with soft part having longer base than spinous part. Minute scales. Gill rakers in anterior row 19-23, posterior 22-24. A dark brown area surrounding the caudal spine. Large males develop highly convex foreheads that extend beyond the mouth (Ref. 1602).
Occurs in clear seaward reef slopes, below 15 m, usually below 30 m (Ref. 9710). Adults mainly on deep coastal reef slopes and outer reef walls (Ref. 48637). Found singly or in pairs (Ref. 9710). Feeds on algal film on bare rocks (Ref. 9710). Juveniles found in shallow protected reefs, usually between soft coral, in 0.2-3 m depth (Ref. 9710).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
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. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; Aquarium: Commercial
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Estimates based on models
Preferred temperature (Ref.
123201): 24.5 - 28.4, mean 27.5 °C (based on 214 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02344 (0.01103 - 0.04981), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 2.0 ±0.00 se; based on food items.
Résilience (Ref.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
Nutrients (Ref.
124155): Calcium = 44 [18, 123] mg/100g; Iron = 0.662 [0.254, 1.596] mg/100g; Protein = 18.2 [16.9, 19.5] %; Omega3 = 0.0961 [, ] g/100g; Selenium = 20.8 [7.2, 58.1] μg/100g; VitaminA = 34 [8, 139] μg/100g; Zinc = 2.49 [0.79, 4.57] mg/100g (wet weight);