HomeFreshwater aquarium fishTetras & characinsAnostomus ternetzi Anostomus ternetzi Scientific name: Anostomus ternetzi Fern?ndez-Y?pez, 1949 Anostomus ternetzi is a freshwater fish of the family Anostomidae that grows to about 16 cm (6.3 in). It is moderate to keep and peaceful and needs water at 24–28°C (75–82°F). Native range: South America, streams and rivers of the Orinoco and Amazon systems. Anostomus ternetzi care at a glanceCare levelModerateTemperamentPeacefulAdult size16 cm (6.3 in)Temperature24–28°C (75–82°F)DietOmnivore BiologyOccurs in fast-flowing parts of rivers. Omnivorous, feeds on aquatic plants and insects. Spawns on the vegetation and on the bottom.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAnostomus ternetziFamilyAnostomidae (Headstanders)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length12.0EnvironmentFreshwater;; pH range: 5.8 - 7.5; dH range: 8 - 20 benthopelagicClimateTropicalDistributionSouth America: Orinoco, Araguaia and Amazon River basins; coastal rivers of Guianas.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsCachamaColossoma macropomumRuby tetraAxelrodia rieseiHemigrammus rodwayiHemigrammus ulreyiIguanodectes spilurusMoenkhausia collettiiSee all tetras & characins SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026