HomeFish encyclopediaRay-finned fishesPerch-like fishPerchesSouthern sand darter Southern sand darter (Ammocrypta meridiana) Scientific name: Ammocrypta meridiana Williams, 1975 The Southern sand darter (Ammocrypta meridiana) is a freshwater fish of the family Percidae. Native range: North America, found only in Mobile Bay drainage of Alabama and Mississippi in the USA. BiologyInhabits sandy runs of small to medium rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAmmocrypta meridianaFamilyPercidae (Perches)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.0Common length5.2EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: found only in Mobile Bay drainage of Alabama and Mississippi in the USA.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