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> Acanthuriformes (Surgeonfishes) > Siganidae (Rabbitfishes)
Etymology: Siganus: Latin, siganus = a fish, rabbit fish; by the similarity of the nose (Ref. 45335).
More on authors: Forsskål & Niebuhr.

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

marin; saumâtre récifal; profondeur 1 - 30 m (Ref. 50672). Subtropical; 32°N - 36°S, 25°E - 58°E

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

Western Indian Ocean: several localities in East Africa, and from the Red Sea to the eastern Mediterranean via the Suez Canal.

Length at first maturity / Taille / Poids / Âge

Maturity: L_m 13.7 range ? - ? cm
Max length : 30.2 cm TL mâle / non sexé; (Ref. 118092); common length : 20.0 cm TL mâle / non sexé; (Ref. 30573)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 13; Rayons mous dorsaux (Total) : 10; Épines anales: 7; Rayons mous anaux: 9; Vertèbres: 23. Upper body gray, green or brownish, silvery below; iris iridescent silver or golden. Body color patterns extend to the fins. Spines slender, pungent and venomous. Preopercular angle 88°-96°; cheeks scaled; midline of thorax, isthmus and midline of belly without scales. Frightened fish become mottled or with 6 diagonal zones across side. Tip of broad-based flap of anterior nostril reaching at least halfway to orifice of posterior nostril.

Inhabits shallow waters and generally in schools of 50 to several hundred individuals; prefers protected areas. Feeds by grazing on algae.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Référence principale Upload your references | Références | Coordinateur : Woodland, David J. | Collaborateurs

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)

Préoccupation mineure (LC) ; Date assessed: 04 February 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Venomous (Ref. 4537)

Utilisations par l'homme

Pêcheries: intérêt commercial mineur; Aquaculture: commercial

FAO - Aquaculture systems: production; ; Publication: search | FishSource | Sea Around Us

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Trophic ecology
Éléments du régime alimentaire
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Ecology
Écologie

Population dynamics
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Estimates based on models

Preferred temperature (Ref. 123201): 24.7 - 29.2, mean 27.3 °C (based on 573 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01202 (0.00976 - 0.01482), b=2.98 (2.93 - 3.03), in cm total length, based on LWR estimates for this species (Ref. 93245).

Niveau trophique (Ref. 69278): 2.0 ±0.0 se; based on diet studies.

Résilience (Ref. 120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.22, tm=1-2).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (35 of 100).

Catégorie de prix (Ref. 80766): High.

Nutrients (Ref. 124155): Calcium = 21.9 [10.0, 56.0] mg/100g; Iron = 0.57 [0.26, 1.33] mg/100g; Protein = 19.5 [18.5, 20.6] %; Omega3 = 0.21 [0.11, 0.45] g/100g; Selenium = 7.41 [2.58, 18.44] μg/100g; VitaminA = 52.3 [14.3, 193.5] μg/100g; Zinc = 1.38 [0.54, 3.02] mg/100g (wet weight); based on nutrient studies.

Siganus rivulatus Forsskål & Niebuhr, 1775