HomeFish encyclopediaRay-finned fishesSilversidesNeotropical silversidesBackwaters silverside Backwaters silverside (Membras analis) Scientific name: Membras analis Schultz, 1948 The Backwaters silverside (Membras analis) is a freshwater fish of the family Atherinopsidae. Native range: Western Central Atlantic, Colombia and Venezuela. BiologyFound over muddy bottoms in lagoons or bays with brackish or hyper-saline waters. Feeds on zooplankton.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMembras analisFamilyAtherinopsidae (Neotropical silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Common length10.0EnvironmentMarine; freshwater; brackish; pelagic-neriticClimateTropicalDistributionWestern Central Atlantic: Colombia and Venezuela.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; bait: usuallyResilienceHigh, 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