HomeFish encyclopediaRay-finned fishesCharacinsPencilfishesShining pencilfish Shining pencilfish (Nannostomus nitidus) Scientific name: Nannostomus nitidus Weitzman, 1978 The Shining pencilfish (Nannostomus nitidus) is a freshwater fish of the family Lebiasinidae. In the aquarium it needs water at 24–28°C (75–82°F). Native range: South America, Capim River basin in Par?, Brazil. Shining pencilfish care at a glanceTemperature24–28°C (75–82°F) Species factsScientific nameNannostomus nitidusFamilyLebiasinidae (Pencilfishes)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length3.5EnvironmentFreshwater; benthopelagicClimateTropicalDistributionSouth America: Capim River basin in Par?, Brazil.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026