HomeFreshwater aquarium fishTetras & characinsDiamond tetra Diamond tetra (Moenkhausia pittieri) Scientific name: Moenkhausia pittieri Eigenmann, 1920 The Diamond tetra (Moenkhausia pittieri) is a freshwater fish of the family Characidae that grows to about 6 cm (2.4 in). It is moderate to keep and peaceful, suits community aquariums and needs a tank of at least 115 L (30 US gal), water at 24–28°C (75–82°F) and a pH of 6.0–7.0. Native range: South America, Venezuela, Lake Valencia. Diamond tetra care at a glanceCare levelModerateTemperamentPeacefulCommunity tankGoodAdult size6 cm (2.4 in)Minimum tank115 L (30 US gal)Temperature24–28°C (75–82°F)pH6.0–7.0Hardness5–12 dGH (89–214 ppm)DietOmnivore. Accepts live foods. BiologyFeeds on worms, crustaceans and insects. Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 80 cm.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMoenkhausia pittieriFamilyCharacidae (Characins)OrderCharaciformes (Characins)ClassActinopterygii (Ray-finned fishes)Maximum length6.0EnvironmentFreshwater;; pH range: 6.0 - 7.0; dH range: 5 - 12 benthopelagicClimateTropicalDistributionSouth America: Lake Valencia basin in Venezuela.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tetras & characinsCongo tetraPhenacogrammus interruptusRed phantom tetraHyphessobrycon sweglesiBlack phantom tetraHyphessobrycon megalopterusLemon tetraHyphessobrycon pulchripinnisFlag tetraHyphessobrycon heterorhabdusBlack neon tetraHyphessobrycon herbertaxelrodiSee 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