HomeFreshwater aquarium fishOddballs & predatorsGuyana leaffish Guyana leaffish (Polycentrus schomburgkii) Scientific name: Polycentrus schomburgkii M?ller & Troschel, 1849 The Guyana leaffish (Polycentrus schomburgkii) is a freshwater fish of the family Polycentridae. In the aquarium it needs water at 22–26°C (72–79°F). Native range: South America, Trinidad, and Atlantic coastal rivers of Venezuela, Guyana, Suriname, French Guiana and Brazil. Guyana leaffish care at a glanceTemperature22–26°C (72–79°F) BiologyInhabits clear and turbid water, often brackish water. Feeds on worms, insects and fish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePolycentrus schomburgkiiFamilyPolycentridae (Leaffishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length5.5EnvironmentFreshwater; brackish;; pH range: 6.0 - 7.0; dH range: 18 - 20 benthopelagicClimateTropicalDistributionSouth America: Trinidad, and Atlantic coastal rivers of Venezuela, Guyana, Suriname, French Guiana and Brazil.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercial More oddballs & predatorsAmazon leaffishMonocirrhus polyacanthusGangetic leaffishNandus nandusZig-zag eelMastacembelus armatusBlack ghostApteronotus albifronsGlass knifefishEigenmannia virescensApteronotus leptorhynchusSee all oddballs & predators SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026