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Acanthuriformes (Surgeonfishes) >
Siganidae (Rabbitfishes)
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335).
Issue
Cuvier in Guérin-Méneville, circa 1830.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin récifal; profondeur 0 - 15 m (Ref. 90102). Tropical; 20°N - 29°S, 102°E - 174°W
Western Pacific: scarcely entering the Indo-Malayan area (except eastern Indonesia), north to Palau and Kosrae, south to northwestern Australia and Tonga (Ref. 43045). Replaced by closely related Siganus virgatus from Sulawesi and the Philippines to south India (Ref. 37816).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 25.0 cm SL mâle / non sexé; (Ref. 48637); common length : 20.0 cm TL mâle / non sexé; (Ref. 9813)
Épines dorsales (Total) : 13; Rayons mous dorsaux (Total) : 10; Épines anales: 7; Rayons mous anaux: 9; Vertèbres: 13. Body blue above, silvery white below; from nape through eye to chin a seal brown band, another from base of 4th-5th dorsal spines to just below of pectoral fin. Spines stout, pungent and venomous. Preopercular 97°-110°. Strong scales cover cheeks. Midline of thorax fully scaled; sometimes a few scales absent from pelvic ridges.
Body shape (shape guide): short and / or deep; Cross section: compressed.
Inhabits coral-rich areas of lagoons and seaward reefs. Juveniles form schools. Pairs form at 7 cm; but these pairs continue to form loose schools, sometimes with juvenile scarids, to feed in areas being flooded by the tide. At 20 cm, isolated pairs in deep water lagoons or on drop-offs at reef-edges feed on benthic seaweeds (Ref. 9813, 48637). Anterolateral glandular grooves with venom gland (Ref. 57406). Very closely related to the blue-spotted S. virgatus (Valenciennes) and apparently hybridizes at times with it in the Indo-Malayan region (Ref. 2334). Minimum depth reported taken from Ref. 128797.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Woodland, D.J., 1990. Revision of the fish family Siganidae with descriptions of two new species and comments on distribution and biology. Indo-Pac. Fish. (19):136 p. (Ref. 1419)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2)
Utilisations par l'homme
Pêcheries: intérêt commercial mineur
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Estimations basées sur des modèles
Température préférée (Réf.
123201): 25.5 - 29.3, mean 28.6 °C (based on 1956 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01349 (0.00803 - 0.02267), b=3.11 (2.97 - 3.25), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 2.0 ±0.00 se; based on food items.
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 vulnerability (21 of 100).
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Nutriments (Ref.
124155): Calcium = 46.6 [23.3, 110.7] mg/100g; Iron = 0.739 [0.348, 1.700] mg/100g; Protein = 18.5 [17.0, 20.0] %; Omega3 = 0.0989 [, ] g/100g; Selenium = 18.4 [7.3, 46.3] μg/100g; VitaminA = 35.5 [8.3, 144.5] μg/100g; Zinc = 1.52 [0.59, 3.25] mg/100g (wet weight);