HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesLa Preciosa silverside La Preciosa silverside (Poblana letholepis) Scientific name: Poblana letholepis ?lvarez, 1950 The La Preciosa silverside (Poblana letholepis) is a freshwater fish of the family Atherinopsidae. Native range: Central America, Mexico. Species factsScientific namePoblana letholepisFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; pelagicClimateTropicalDistributionCentral America: Mexico.Conservation status (IUCN)Endangered (EN) (A1ac+2c, B1+2c, C2b)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