HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesInland silverside Inland silverside (Menidia beryllina) Scientific name: Menidia beryllina Cope, 1867 The Inland silverside (Menidia beryllina) is a freshwater fish of the family Atherinopsidae. Native range: Western Atlantic, Massachusetts to southern Florida in USA and around Gulf of Mexico to northeastern Mexico. BiologyAnal soft rays: 16 - 19; Vertebrae: 38 - 42Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMenidia beryllinaFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Common length7.8EnvironmentMarine; freshwater; brackish; pelagic-neritic; depth range 0 - ? mClimateSubtropicalDistributionWestern Atlantic: Massachusetts to southern Florida in USA and around Gulf of Mexico to northeastern Mexico.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (tmax=1) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026