Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale; potamodromo. Tropical; 11°S - 21°S
Africa: lower and middle Zambezi, Buzi, Pungwe (Ref. 52193), lower Sabi and Ludi Rivers (Ref. 42505), Luapula-Moero-Bangwelo (Zambian Congo system) (Ref. 42505, 52193). Also known from the Ruvuma and Rufiji rivers in Tanzania (Ref. 7248, 52193), lakes Malawi, Tanganyika (Ref. 4967, 52193) and Rukwa, and other eastward flowing rivers in Tanzania (Ref. 4967).
Lunghezza alla prima maturità / Dimensione / Peso / Età
Maturità: Lm 34.0  range ? - ? cm
Max length : 75.0 cm SL maschio/sesso non determinato; (Ref. 52193); peso massimo pubblicato: 10.0 kg (Ref. 52193)
Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 65 - 75; Spine anali: 0; Raggi anali molli: 17 - 19. Diagnosis: dorsal fin greater than twice the length of anal fin; dorsal origin nearer tip of snout than caudal fin base; snout 2-2.5 times in head length; caudal peduncle less than 4 times in standard length (Ref. 52193).
Body shape (shape guide): fusiform / normal.
Found in caves and muddy areas, also hides among weeds (Ref. 13337). Favours quiet deep water with a soft muddy bottom (Ref. 52193). Forms shoals (Ref. 13337, 52193). Feeds on weeds (Ref. 5595) and insects but may also feed on small fishes (Ref. 5595, 52193) and fish eggs (Ref. 52193), blood worms (Ref. 13337), small crustaceans and mollusks (Ref. 13337, 52193). Active mainly at night; breeds during the rainy season, moving upstream in rivers after flood spates have receded (Ref. 52193). Migrations appears to occur at irregular interval as this fish is not a powerful swimmer and would not be able to cope with very high water current (Ref. 13337). Females carry 10,000-70,000 eggs; can give a mild shock when caught (Ref. 7248, 52193).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Gosse, J.-P., 1984. Mormyridae. p. 63-122. 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. 3203)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Usi umani
Pesca: commerciale; Pesce da pesca sportiva: si; Acquario: Commerciale
Strumenti
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Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 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=0.01259 (0.00694 - 0.02284), b=2.89 (2.74 - 3.04), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.3 ±0.46 se; based on food items. |
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Generation time |
4.9 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Resilienza (Fonte Biblio. 120179) |
Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.22). |
Vulnerabilità della pesca (Ref. 59153) |
Moderate to high vulnerability (47 of 100). 🛈 |
Categoria di prezzo (Ref. 80766) |
Unknown.
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