Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά); Γλυκού νερού; Υφάλμυρο βενθικό(ς); κατάδρομος (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).
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 175 cm TL αρσενικό/απροσδιόριστο; (Ref. 48660); μεγ. δημοσιευμένο βάρος: 20.6 kg (Ref. 52193); μεγ. αναφερόμενη ηλικία: 15 έτη (Ref. 48660)
Ραχιαίες άκανθες (συνολικά) : 0; Εδρικές άκανθες: 0.
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.
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Skelton, P.H., 1993. A complete guide to the freshwater fishes of southern Africa. Southern Book Publishers. 388 p. (Ref. 7248)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
αλιεία: Εμπορικό(ά); αλιεία αναψυχής: ναί
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Preferred temperature (Ref.
123201): 25 - 28.7, mean 27.1 °C (based on 306 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00074 (0.00039 - 0.00139), b=3.18 (3.02 - 3.34), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.8 ±0.7 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (tmax=15).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
