Taxonomic Remarks
Common names may have to be split accordingly to former synonym japonicus and new species insularis), following distribution (Ref. 123820).
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin récifal; non migrateur; profondeur 4 - 300 m (Ref. 11888). Tropical; 37°N - 34°S, 28°E - 169°W (Ref. 5222)
Western Indian Ocean: restricted.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 27.0, range 23 - 31 cm
Max length : 80.0 cm TL mâle / non sexé; (Ref. 89707); common length : 50.0 cm TL mâle / non sexé; (Ref. 5450); poids max. publié: 7.0 kg (Ref. 4787); âge max. reporté: 29 années (Ref. 42001)
Épines dorsales (Total) : 11; Rayons mous dorsaux (Total) : 16 - 18; Épines anales: 3; Rayons mous anaux: 8. Live color whitish, with small dark brown spots on head, body, and fins except ventrally on head, thorax, and lower abdomen. Can assume a transient color phase of 3-4 rows of very large round dark spots on top of the small-spot pattern. 96-125 scales in longitudinal series. Pyloric caeca 26-52 (Ref. 04787); characterized further by having ctenoid body scales, except cycloid scales on nape, thorax, parts of ventral abdomen; body with auxiliary scales; greatest depth of body 2.8-3.3 in SL; truncate to slightly emarginate caudal fin; pelvic fins 1.7-2.4 in head length (Ref. 90102); interorbital slightly convex; preopercle angle rounded, 4-7 enlarged serrae at angle below a slight notch; upper edge of operculum straight; posterior nostril not noticeably larger than anterior nostril; maxilla reaches about to vertical at rear edge of eye; scaly maxilla, low step on posterior part of ventral edge; 2-4 rows of teeth in midlateral part of lower jaw, inner ones about twice the size of outer teeth (Ref. 089707).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Found over a wide range of habitats like seagrass beds and outer reef slopes (Ref. 5213), also on mud bottoms. Solitary (Ref. 90102). Feed on small fishes and crustaceans (mainly stomatopods and crabs). Sexual transition from female to male occurs between 35-45 cm, but not all females change sex. Mature individuals form spawning aggregations (Ref. 55367). E. chlorostigma is closely related and very similar to E. polylepis and E. gabriellae which seem to replace it in the northwestern Indian Ocean. Solitary (Ref. 90102).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Sex change occurs at length of 46.4 cm TL and 3 years of age (Ref. 55367). Also Ref. 6976.
Heemstra, P.C. and J.E. Randall, 1993. FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date. Rome: FAO. FAO Fish. Synop. 125(16):382 p. (Ref. 5222)
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
Outils
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 19.1 - 28.2, mean 25.8 °C (based on 1091 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00956 - 0.01257), b=3.04 (3.02 - 3.06), in cm total length, based on LWR estimates for this species (Ref.
93245).
Niveau trophique (Réf.
69278): 4.0 ±0.67 se; based on food items.
Résilience (Réf.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (K=0.17-0.19; tmax=29; tm=2-3; Fec = 1,014,818).
Vulnérabilité de la pêche (Ref.
59153): Moderate to high vulnerability (51 of 100).
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Vulnérabilité climatique (Ref.
125649): High to very high vulnerability (73 of 100).
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Nutriments (Ref.
124155): Calcium = 19.5 [9.1, 41.4] mg/100g; Iron = 0.438 [0.234, 0.879] mg/100g; Protein = 18.6 [17.0, 20.0] %; Omega3 = 0.136 [0.084, 0.221] g/100g; Selenium = 53.6 [30.9, 95.5] μg/100g; VitaminA = 139 [40, 484] μg/100g; Zinc = 1.06 [0.75, 1.49] mg/100g (wet weight);