HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesLargetooth silverside Largetooth silverside (Chirostoma arge) Scientific name: Chirostoma arge Jordan & Snyder, 1899 The Largetooth silverside (Chirostoma arge) is a freshwater fish of the family Atherinopsidae. Native range: North America, endemic to the Lerma River basin, Mexico. Species factsScientific nameChirostoma argeFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)EnvironmentFreshwater; benthopelagicClimateTropicalDistributionNorth America: endemic to the Lerma River basin, Mexico.Conservation status (IUCN)Vulnerable (VU) (A2c;B1ab(i,iii))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