HomeFreshwater aquarium fishGuppies & livebearersBold characodon Bold characodon (Characodon audax) Scientific name: Characodon audax Smith & Miller, 1986 The Bold characodon (Characodon audax) is a freshwater fish of the family Goodeidae that grows to about 5 cm (2 in). It is easy to keep and aggressive, is best kept in a species tank and needs a tank of at least 75 L (20 US gal), water at 22–24°C (72–75°F) and a pH of 7.0–8.0. Native range: Central America, streams and rivers in the central highlands of Mexico. Bold characodon care at a glanceCare levelEasyTemperamentAggressiveCommunity tankNot suitableAdult size5 cm (2 in)Minimum tank75 L (20 US gal)Temperature22–24°C (72–75°F)pH7.0–8.0Hardness6–20 dGH (107–357 ppm)DietOmnivore. Accepts flakes, wafers, frozen foods and live foods. Species factsScientific nameCharacodon audaxFamilyGoodeidae (Splitfins)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; demersalClimateSubtropicalDistributionNorth America: Mexico.Conservation status (IUCN)Vulnerable (VU) (A1ac+2c, B1+2c, C2a, D2)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: commercial More guppies & livebearersBluetail goodeaAtaeniobius toweriButterfly splitfinAmeca splendensPoecilia wingeiMollyPoecilia sphenopsSouthern platyfishXiphophorus maculatusGreen swordtailXiphophorus helleriiSee all guppies & livebearers Can it live with...?Bold characodon and Bluetail goodeaBold characodon and Lampeye panchaxBold characodon and MollyBold characodon and MosquitofishBold characodon and Redtail splitfin 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