HomeFish encyclopediaRay-finned fishesCatfishSqueakers or upside-down catfishesBugeye squeaker Bugeye squeaker (Synodontis contracta) Scientific name: Synodontis contracta Vinciguerra, 1928 The Bugeye squeaker (Synodontis contracta) is a freshwater fish of the family Mochokidae. In the aquarium it needs water at 22–25°C (72–77°F). Native range: Africa, middle Congo River basin, including Pool Malebo (= Stanley Pool) and the Kasai drainage. Bugeye squeaker care at a glanceTemperature22–25°C (72–77°F) BiologyForms large schools in pools, rivers and smaller streams with muddy bottoms or among vegetation near the shore. Prefers to swim upside-down and will feed in this position as it skims along just under the surface sucking in floating food. The mouth is ventrally located and the teeth are 'fused' together into a rasping patch or plate that is used to scrape algae and slime as well as other types of organisms off the surfaces of the plants, stones, driftwood, etc. Oviparous.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSynodontis contractaFamilyMochokidae (Squeakers or upside-down catfishes)OrderSiluriformes (Catfish)ClassActinopterygii (Ray-finned fishes)Maximum length9.7EnvironmentFreshwater;; pH range: 6.2 - 7.2; dH range: 4 - 15 benthopelagicClimateTropicalDistributionAfrica: middle Congo River basin, including Pool Malebo (= Stanley Pool) and the Kasai drainage.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: commercialResilienceHigh, 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