HomeFreshwater aquarium fishTetras & characinsHalfbanded pyrrhulina Halfbanded pyrrhulina (Pyrrhulina laeta) Scientific name: Pyrrhulina laeta Cope, 1872 The Halfbanded pyrrhulina (Pyrrhulina laeta) is a freshwater fish of the family Lebiasinidae. In the aquarium it needs water at 23–27°C (73–81°F). Native range: South America, presumed to be central and upper Amazon River Basin. Halfbanded pyrrhulina care at a glanceTemperature23–27°C (73–81°F) BiologyFeeds on worms, crustaceans and insects.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePyrrhulina laetaFamilyLebiasinidae (Pencilfishes)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length7.6EnvironmentFreshwater;; pH range: 5.8 - 7.0; dH range: 2 - 8 benthopelagicClimateTropicalDistributionSouth America: presumed to be central and upper Amazon River Basin.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercial More tetras & characinsStriped headstanderAnostomus anostomusMarbled headstanderAbramites hypselonotusOneline pencilfishNannostomus unifasciatusBarred pencilfishNannostomus espeiGolden pencilfishNannostomus beckfordiRedspotted tetraCopeina guttataSee all tetras & characins SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026