HomeFish encyclopediaRay-finned fishesHerringsHerrings, shads and sardinesThracian shad Thracian shad (Alosa vistonica) Scientific name: Alosa vistonica Economidis & Sinis, 1986 The Thracian shad (Alosa vistonica) is a freshwater fish of the family Clupeidae. Native range: Europe, Lake Vistonis, Greece. BiologyDistinguished from its congeners entering freshwater of Mediterranean basin by having 78-97 gill rakers and well-developed teeth on palatine and vomer, especially in juveniles.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAlosa vistonicaFamilyClupeidae (Herrings, shads and sardines)OrderClupeiformes (Herrings)ClassActinopterygii (Ray-finned fishes)Maximum length17.0EnvironmentFreshwater; pelagic; non-migratoryClimateTemperateDistributionEurope: Lake Vistonis, Greece.Conservation status (IUCN)Critically Endangered (CR) (A2ace; B1ab(iii,v))Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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