HomeFish encyclopediaRay-finned fishesCatfishSqueakers or upside-down catfishesPlain squeaker Plain squeaker (Synodontis zambezensis) Scientific name: Synodontis zambezensis Peters, 1852 The Plain squeaker (Synodontis zambezensis) is a freshwater fish of the family Mochokidae. Native range: Africa, Middle and lower Zambezi south to the Pongolo system. Absent from upper Save-Runde system. BiologyThe spines are said to be poisonous. Occurs in pools and slow flowing reaches of perennial and seasonal rivers. Favors riverine habitats to floodplains. Shelters in holes or crevices or on the underside of logs, frequently in an upside-down position. Active at night, feeds on detritus and plant matter such as seeds as well as small invertebrates like insects and snails. Will scavenge readily. Oviparous. Breeds in summer.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSynodontis zambezensisFamilyMochokidae (Squeakers or upside-down catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length43.0EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAfrica: Middle and lower Zambezi south to the Pongolo system. Absent from upper Save-Runde system.Conservation status (IUCN)Least Concern (LC)Threat to humansVenomousUsesFisheries: minor commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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