HomeFish encyclopediaRay-finned fishesBony tonguesElephantfishesMonteiri's bulldog Monteiri's bulldog (Marcusenius monteiri) Scientific name: Marcusenius monteiri G?nther, 1873 The Monteiri's bulldog (Marcusenius monteiri) is a freshwater fish of the family Mormyridae. Native range: Africa, Congo basin. Species factsScientific nameMarcusenius monteiriFamilyMormyridae (Elephantfishes)OrderOsteoglossiformes (Bony tongues)ClassActinopterygii (Ray-finned fishes)Maximum length45.0EnvironmentFreshwater; demersalClimateTropicalDistributionAfrica: Congo basin.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.26) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026