HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesToluca silverside Toluca silverside (Chirostoma riojai) Scientific name: Chirostoma riojai Sol?rzano & L?pez, 1966 The Toluca silverside (Chirostoma riojai) is a freshwater fish of the family Atherinopsidae. Native range: North America, endemic to the Lerma River basin. Species factsScientific nameChirostoma riojaiFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; benthopelagicClimateTropicalDistributionNorth America: endemic to the Lerma River basin.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