HomeFreshwater aquarium fishGuppies & livebearersTwospot livebearer Twospot livebearer (Heterandria bimaculata) Scientific name: Heterandria bimaculata Heckel, 1848 The Twospot livebearer (Heterandria bimaculata) is a freshwater fish of the family Poeciliidae that grows to about 7.5 cm (3 in). In the aquarium it needs a tank of at least 76 L (20 US gal) and water at 20–28°C (68–82°F). Native range: Central America, Mexico to Belize, Honduras and Guatemala. Twospot livebearer care at a glanceAdult size7.5 cm (3 in)Minimum tank76 L (20 US gal)Temperature20–28°C (68–82°F) Species factsScientific nameHeterandria bimaculataFamilyPoeciliidae (Poeciliids)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length7.0EnvironmentFreshwater;; pH range: 7.0 - ?; dH range: 10 - 15 benthopelagicClimateTropicalDistributionCentral America: Mexico to Belize, Honduras and Guatemala.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (K=0.26-0.36) More guppies & livebearersMollyPoecilia sphenopsSouthern platyfishXiphophorus maculatusGreen swordtailXiphophorus helleriiGuppyPoecilia reticulataSailfin mollyPoecilia latipinnaMosquitofishGambusia affinisSee all guppies & livebearers 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