HomeFish encyclopediaRay-finned fishesSpiny eelsSpiny eelsOcellated spiny eel Ocellated spiny eel (Mastacembelus vanderwaali) Scientific name: Mastacembelus vanderwaali Skelton, 1976 The Ocellated spiny eel (Mastacembelus vanderwaali) is a freshwater fish of the family Mastacembelidae. Native range: Africa, upper Zambezi (eastern Caprivi) and Okavango. Species factsScientific nameMastacembelus vanderwaaliFamilyMastacembelidae (Spiny eels)OrderSynbranchiformes (Spiny eels)ClassActinopterygii (Ray-finned fishes)Maximum length15.1EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAfrica: upper Zambezi (eastern Caprivi) and Okavango.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries:ResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026