HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesGulf silverside Gulf silverside (Atherinella alvarezi) Scientific name: Atherinella alvarezi D?az-Pardo, 1972 The Gulf silverside (Atherinella alvarezi) is a freshwater fish of the family Atherinopsidae. Native range: North America, Mexico. Species factsScientific nameAtherinella alvareziFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; benthopelagicClimateTropicalDistributionNorth America: 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