Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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

Environment / Climate / Range Ecology

Freshwater; demersal; potamodromous (Ref. 51243). Tropical, preferred ?

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

Africa: Nile and Chad basins. Known from the great Sahelo-Soudanian basins in Senegal, Gambia and Volta; also in the Mono, the Gêba, the Bandama, the Comoe River, and the Ebrie and Aguien lagoons (Ref. 2915).

Length at first maturity / Size / Weight / Age

Maturity: L_m 19.0 range ? - ? cm
Max length : 50.0 cm SL male/unsexed; (Ref. 31256); max. published weight: 1.1 kg (Ref. 2915)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 63-82; Anal spines: 0; Anal soft rays: 16 - 20. Caudal peduncle high, 1.1-2.0 length to length ratio. 4.2-6.2 SL/depth ratio; silver color sometimes grayish or darker, back grayish yellow, green or black, stomach white, whitish yellow or clear gray.

Possesses electroreceptors over the entire head and on the ventral and dorsal regions of the body, but absent from the side and the caudal peduncle where the electric organ is located (Ref. 10011). A fractional spawner (Ref. 10605; 10606).

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

Main reference Upload your references | References | Coordinator | Collaborators

Bigorne, R., 1990. Mormyridae. p. 122-184. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux saumâtres d'Afrique de l'Ouest. tome 1. Faune Trop. 28. Musée Royal de l'Afrique Centrale, Tervuren, and ORSTOM, Paris. (Ref. 2915)

IUCN Red List Status (Ref. 109396)

Least Concern (LC)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial

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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=0.01288 (0.00753 - 0.02204), b=2.81 (2.67 - 2.95), based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 3.2 ±0.4 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).

Vulnerability (Ref. 59153): Moderate to high vulnerability (47 of 100) .

Price category (Ref. 80766): Unknown.

Mormyrus hasselquistii Valenciennes, 1847