HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesBigeye silverside Bigeye silverside (Chirostoma grandocule) Scientific name: Chirostoma grandocule Steindachner, 1894 The Bigeye silverside (Chirostoma grandocule) is a freshwater fish of the family Atherinopsidae. Native range: North America, endemic to the Lerma River basin, Mexico. Species factsScientific nameChirostoma grandoculeFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length12.3EnvironmentFreshwater; benthopelagicClimateTropicalDistributionNorth America: endemic to the Lerma River basin, Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.17) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026