HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesMancuernas silverside Mancuernas silverside (Atherinella pellosemeion) Scientific name: Atherinella pellosemeion Chernoff, 1986 The Mancuernas silverside (Atherinella pellosemeion) is a freshwater fish of the family Atherinopsidae. Native range: North America, Nayarit, Mexico. Species factsScientific nameAtherinella pellosemeionFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; benthopelagicClimateTropicalDistributionNorth America: Nayarit, Mexico.Conservation status (IUCN)Not EvaluatedThreat 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