HomeFreshwater aquarium fishTetras & characinsSemaprochilodus insignis Semaprochilodus insignis Scientific name: Semaprochilodus insignis Jardine, 1841 Semaprochilodus insignis is a freshwater fish of the family Prochilodontidae that grows to about 27 cm (11 in). It is easy to keep and peaceful, needs carefully chosen tank mates and needs a tank of at least 475 L (125 US gal), water at 22–26°C (72–79°F) and a pH of 5.5–7.2. Native range: South America, Central and western portions of the Amazon basin. Semaprochilodus insignis care at a glanceCare levelEasyTemperamentPeacefulCommunity tankWith cautionAdult size27 cm (11 in)Minimum tank475 L (125 US gal)Temperature22–26°C (72–79°F)pH5.5–7.2Hardness5–15 dGH (89–268 ppm)DietOmnivore. Accepts flakes, algae wafers, frozen foods and live foods. Species factsScientific nameSemaprochilodus insignisFamilyProchilodontidae (Flannel-mouth characiforms)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length27.0EnvironmentFreshwater;; pH range: 5.5 - 7.2; dH range: ? - 15 benthopelagic; potamodromousClimateTropicalDistributionSouth America: central and western portions of the Amazon basin and tributary rivers.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsCachamaColossoma macropomumAnostomus ternetziRuby tetraAxelrodia rieseiHemigrammus rodwayiHemigrammus ulreyiIguanodectes spilurusSee 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