Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino; acqua dolce; salmastro demersale; catadromo (Ref. 51243). Tropical
Africa: Kenya to South Africa (Ref. 3506), uncommon south of the Save River (Ref. 7248, 52193). Also Reunion and Mauritius (Ref. 33390). Dominant eel species in the Zambezi system and farther north in East Africa (Ref. 52193).
Dimensione / Peso / Età
Maturità: Lm ? range ? - ? cm
Max length : 175 cm TL maschio/sesso non determinato; (Ref. 48660); peso massimo pubblicato: 20.6 kg (Ref. 52193); Età massima riportata: 15 anni (Ref. 48660)
Spine dorsali (totale) : 0; Spine anali: 0.
Body shape (shape guide): eel-like; Cross section: circular.
Migratory species which breeds in the ocean (Ref. 52331), it requires rivers and oceans (Ref. 30558). Young fish migrate upstream with a continued feeding mode, especially on invertebrates found on rocks and logs washed by fast moving waters (Ref. 30558). They inhabit various niches in a river system (Ref. 13337) and penetrate far inland, surmounting formidable barriers in its upstream migration, including the Kariba and Cahora Bassa dams (Ref. 52193). Adults need moving water to migrate back to the ocean, especially after heavy rains (Ref. 30558). Their food consists of crabs, frogs and insects (Ref. 30558), and even fish, including trout in the streams of the eastern highlands of Zimbabwe (Ref. 2478, 52193). Caught with various types of nets.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Skelton, P.H., 1993. A complete guide to the freshwater fishes of southern Africa. Southern Book Publishers. 388 p. (Ref. 7248)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: commerciale; Pesce da pesca sportiva: si
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Temperatura preferita (Fonte Biblio.
123201): 25 - 28.7, mean 27.1 °C (based on 306 cells).
Indice di diversità filogenetica (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00074 (0.00040 - 0.00138), b=3.18 (3.02 - 3.34), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Livello trofico (Fonte Biblio.
69278): 3.8 ±0.7 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (tmax=15).
Vulnerabilità della pesca (Ref.
59153): Very high vulnerability (90 of 100).
🛈
