HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsMarathon minnow Marathon minnow (Pelasgus marathonicus) Scientific name: Pelasgus marathonicus Vinciguerra, 1921 The Marathon minnow (Pelasgus marathonicus) is a freshwater fish of the family Cyprinidae. Native range: Europe, Marathon plain and Sperchios and Kifissos drainages in Greece. BiologyInhabits springs, swamps, and canals. Occurs usually among vegetation or under shore cover. Feeds on a wide variety of aquatic invertebrates, algae and detritus. Reaches up to about 6.5 cm SL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePelasgus marathonicusFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length6.5EnvironmentFreshwater; benthopelagicClimateTemperateDistributionEurope: Marathon plain and Sperchios and Kifissos drainages in Greece.Conservation status (IUCN)Near Threatened (NT)Threat to humansHarmlessUsesFisheries:ResilienceHigh, 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