Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin récifal; profondeur 8 - 30 m (Ref. 90102), usually 15 - 20 m (Ref. 48637). Tropical; 25°C - 28°C (Ref. 27115); 33°N - 25°S
Indo-Pacific: East Africa to the Marquesan and Society islands, north to the Ryukyu Islands, south to Vanuatu.
Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Max length : 90.0 cm FL mâle / non sexé; (Ref. 1602); âge max. reporté: 31 années (Ref. 52229)
Épines dorsales (Total) : 4 - 5; Rayons mous dorsaux (Total) : 28 - 30; Épines anales: 2; Rayons mous anaux: 27 - 28. Distinctive humped back; horn only in adult males. A few scattered small dark-edged pale spots on postorbital head and body above pectoral fins. No white margin posteriorly on caudal fin. Profile of snout from mouth to eye strongly sloping, forming an angle of about 40° to horizontal axis of body (Ref 9808).
Body shape (shape guide): fusiform / normal.
Inhabits deep coastal, usually in small groups but occasionally in large schools (Ref. 48637). Sometimes solitary (Ref. 90102). An uncommon species found in seaward reef slopes (Ref. 9710, 48637), also along rocky shores (Ref. 30573). Feeds on benthic algae (Ref. 30573). Caught with nets (Ref. 30573).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Spawn in pairs (Ref. 240).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; Aquarium: Commercial
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 25.7 - 29, mean 28.1 °C (based on 218 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00838 - 0.02612), b=2.93 (2.78 - 3.08), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 2.7 ±0.29 se; based on food items.
Résilience (Réf.
120179): Très faible, temps minimum de doublement de population supérieur à 14 ans (K=0.429; tmax=31).
Vulnérabilité de la pêche (Ref.
59153): High vulnerability (60 of 100).
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Nutriments (Ref.
124155): Calcium = 23.1 [13.7, 44.2] mg/100g; Iron = 0.437 [0.219, 0.804] mg/100g; Protein = 18.8 [17.7, 19.9] %; Omega3 = 0.107 [0.065, 0.200] g/100g; Selenium = 36.5 [18.1, 64.6] μg/100g; VitaminA = 54.9 [16.4, 168.2] μg/100g; Zinc = 1.26 [0.87, 1.79] mg/100g (wet weight);
