HomeFreshwater aquarium fishTetras & characinsSlender robber Slender robber (Rhabdalestes rhodesiensis) Scientific name: Rhabdalestes rhodesiensis Ricardo-Bertram, 1943 The Slender robber (Rhabdalestes rhodesiensis) is a freshwater fish of the family Alestidae. Species factsScientific nameRhabdalestes rhodesiensisFamilyAlestidae (African tetras)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length4.3EnvironmentFreshwater; pelagicClimateTropicalDistributionAfrica: Bangwelo-Luapula (Democratic Republic of the Congo and Zambia). Possibly present in the Kafue River system. Presence in southern Africa (upper Zambezi, Lake Kariba and the Kalomo River in Botswana as reported by ) needs confirmation. Possibly a synonym of R. maunensis.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries:; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsMarbled headstanderAbramites hypselonotusStriped headstanderAnostomus anostomusOneline pencilfishNannostomus unifasciatusBarred pencilfishNannostomus espeiGolden pencilfishNannostomus beckfordiRedspotted tetraCopeina guttataSee all tetras & characins SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026