HomeFish encyclopediaRay-finned fishesCarpsMinnows or carpsSicklefin chub Sicklefin chub (Macrhybopsis meeki) Scientific name: Macrhybopsis meeki Jordan & Evermann, 1896 The Sicklefin chub (Macrhybopsis meeki) is a freshwater fish of the family Cyprinidae. BiologyInhabits sand and gravel runs of large rivers.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMacrhybopsis meekiFamilyCyprinidae (Minnows or carps)OrderCypriniformes (Carps)ClassActinopterygii (Ray-finned fishes)Maximum length11.0Common length7.0EnvironmentFreshwater; demersalClimateTemperateDistributionNorth America: Missouri River from Montana to the mouth of lower Kansas River, Kansas and in the Mississippi River from the mouth of Missouri River to the mouth of Ohio River. Also in south Mississippi and north Louisiana. Fairly common in middle Missouri River but rare elsewhere.Conservation status (IUCN)Lower Risk: near threatened (LR/nt)Threat 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