HomeFish encyclopediaRay-finned fishesBony tonguesElephantfishesMormyrids Mormyrids (Mormyrus rume rume) Scientific name: Mormyrus rume rume Valenciennes, 1847 The Mormyrids (Mormyrus rume rume) is a freshwater fish of the family Mormyridae. BiologyAffinities: look-alike of M. subundulatus and M. tapirus. Feeds on insects and larvae. Generates electric organ discharge (EOD) of long duration that seems to correlate with territorial behavior of the species.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMormyrus rume rumeFamilyMormyridae (Elephantfishes)OrderOsteoglossiformes (Bony tongues)ClassActinopterygii (Ray-finned fishes)Maximum length100.0EnvironmentFreshwater; demersal; potamodromousClimateTropicalDistributionAfrica: Gambia, Senegal, Niger, Volta and Chad basins. Sahelo-Soudanian basins and the coastal basins of the rivers Cavally, Bandama, Sassandra, Como?, Mono, Ou?m?, Ogun and Culufi.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming tm=5-10; Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026