Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; eau douce; saumâtre démersal; catadrome (Ref. 138280); profondeur 0 - 3000 m (Ref. 86942). Tropical; 46°N - 39°S, 18°E - 89°W
Indo-Pacific: from Western Cape, South Africa, inland Mozambique and lower Zambezi River to French Polynesia, north to southern Japan, east to Galapagos. Also rivers of Madagascar and adjacent islands (Ref. 52193).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 70.0 cm TL mâle / non sexé; (Ref. 57749); 200.0 cm TL (female); common length : 26.3 cm TL mâle / non sexé; (Ref. 35840); poids max. publié: 20.5 kg (Ref. 13337); poids max. publié: 20.5 kg; âge max. reporté: 40 années (Ref. 48660)
Vertèbres: 100 - 110. Diagnosis: Distinguished from all other species by the mottled colour and the long dorsal fin, which begins closer to the gill opening than to the anus (Ref. 9828).
Body shape (shape guide): eel-like.
Live in freshwater areas as adults, estuaries and seas as young (Ref. 12693). Found in lowland rivers as well as upland tributaries (Ref. 2847). While in river, the sex gland does not develop. But in winter when they move from the stream to river mouth, the sex gland begins to develop as mature individuals go to deep sea to breed (Ref. 45563). The spawning grounds are deep sea gullies among the south of the Philippines, east of Indonesia and Papua New Guinea (Ref. 45563). Are active at night, feeding on a wide range of prey (Ref. 7248, 79840), especially crabs, frogs and fish (Ref. 7248). Thought to breed east of Madagascar where the young are wafted to the East Coast by ocean currents (Ref. 13337, 79840).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Semelparous.
Castle, P.H.J., 1984. Anguillidae. p. 34-37. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3506)
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; Aquaculture: commercial; pêche sportive: oui
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00076 (0.00037 - 0.00157), b=3.17 (3.00 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Niveau trophique (Réf. 69278) |
3.8 ±0.67 se; based on food items. |
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Generation time |
2.2 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Résilience (Réf. 120179) |
Très faible, temps minimum de doublement de population supérieur à 14 ans (tmax=40). |
Vulnérabilité de la pêche (Ref. 59153) |
Moderate vulnerability (42 of 100). 🛈 |
Catégorie de prix (Ref. 80766) |
Unknown.
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