HomeFish encyclopediaRay-finned fishesLive bearers, Killifishes and RivulinesAfrican rivulinesMnanzini nothobranch Mnanzini nothobranch (Nothobranchius willerti) Scientific name: Nothobranchius willerti Wildekamp, 1992 The Mnanzini nothobranch (Nothobranchius willerti) is a freshwater fish of the family Nothobranchiidae. In the aquarium it needs water at 24–28°C (75–82°F). Native range: Africa, Kenya. Mnanzini nothobranch care at a glanceTemperature24–28°C (75–82°F) BiologyBottom spawner, 3 months incubation. Is difficult to maintain in aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNothobranchius willertiFamilyNothobranchiidae (African rivulines)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length4.0EnvironmentFreshwater; benthopelagic; non-migratoryClimateTropicalDistributionAfrica: Kenya.Conservation status (IUCN)Vulnerable (VU) (D2)Threat to humansHarmlessUsesAquarium: commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026