HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesMoon silverside Moon silverside (Atherinella argentea) Scientific name: Atherinella argentea Chernoff, 1986 The Moon silverside (Atherinella argentea) is a freshwater fish of the family Atherinopsidae. In the aquarium it needs water at 26–30°C (79–86°F). Native range: Eastern Central Pacific, R?o Madre Vieja, Guatemala to Chiriqu? Gulf, Panama. Moon silverside care at a glanceTemperature26–30°C (79–86°F) BiologyCommonly found in estuaries and sometimes penetrates rivers. Food consists mainly of terrestrial insects and fruit.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAtherinella argenteaFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length11.1EnvironmentMarine; freshwater; brackish; pelagic-neriticClimateTropicalDistributionEastern Central Pacific: R?o Madre Vieja, Guatemala to Chiriqu? Gulf, Panama.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026