HomeFish encyclopediaRay-finned fishesCatfishSqueakers or upside-down catfishesLargemouth squeaker Largemouth squeaker (Synodontis macrostoma) Scientific name: Synodontis macrostoma Skelton & White, 1990 The Largemouth squeaker (Synodontis macrostoma) is a freshwater fish of the family Mochokidae. Native range: Africa, Kafue, Upper Zambezi, Okavango and Cunene rivers. BiologyDorsal spines (total): 1; Dorsal soft rays (total): 6; Anal soft rays: 12 - 14; Vertebrae: 37 - 38Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSynodontis macrostomaFamilyMochokidae (Squeakers or upside-down catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length9.2EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAfrica: Kafue, Upper Zambezi, Okavango and Cunene rivers.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, 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