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Actinopterygii (ray-finned fishes) > Osteoglossiformes (Bony tongues) > Mormyridae (Elephantfishes)
Etymology: Mormyrus: Greek, mormyros = a fish (Sparus sp) (Ref. 45335). More on author: Forsskål.

Environment / Climate / Range Ecology

Freshwater; demersal; depth range 0 - 70 m (Ref. 34291), usually 0 - 50 m (Ref. 34291). Tropical; 22°C - 26°C (Ref. 2059), preferred ?

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: known from the Lower Nile up to the Lake Victoria basin (Ref. 1878), including Baro system in Ethiopia (Ref. 54860). Present in Lakes Victoria, Kyoga, Albert, Edward and George, the Victoria and Murchison Nile (Ref. 34290), and the Middle Akagera system (Ref. 46152). Also known from the Lake Turkana basin and the Northern Ewaso Nyiro (Ref. 52331).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 100.0 cm SL male/unsexed; (Ref. 34290); common length : 60.0 cm SL male/unsexed; (Ref. 34290)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Anal spines: 0. Dorsal head profile straight or somewhat curved, sloping steeply. Snout produced into a stout trunk whose thickness and angle to the face are variable. Lips thick. Eye small. Dull bronze dorsally, lighter ventrally (Ref. 34290).

Solitary, nocturnal species (Ref. 28714). In Lake Victoria in both coastal and offshore waters (Ref. 4903). May spawn in the main lake, perhaps in deep water over rocks (Ref. 52083). In Lake Kyoga in open water rather than weedy areas (Ref. 55624). Bottom feeder; small fishes eat lithophilic insects; adults almost exclusively insectivorous; chironomids dominate in the diet (Ref. 12526). Oviparous (Ref. 205).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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)

IUCN Red List Status (Ref. 115185)

Least Concern (LC)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquarium: commercial

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More information

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Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01318 (0.00582 - 0.02984), b=2.84 (2.66 - 3.02), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 3.2 ±0.40 se; Based on food items.

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 1,393).

Vulnerability (Ref. 59153): High vulnerability (63 of 100) .

Price category (Ref. 80766): Unknown.

Mormyrus kannume Forsskål, 1775