HomeFish encyclopediaRay-finned fishesNeedle fishesHalfbeaksHardhead halfbeak Hardhead halfbeak (Chriodorus atherinoides) Scientific name: Chriodorus atherinoides Goode & Bean, 1882 The Hardhead halfbeak (Chriodorus atherinoides) is a freshwater fish of the family Hemiramphidae. Native range: Western Atlantic, southeastern Florida, USA and northern Gulf of Mexico to Cuba and Yucatan, Mexico. BiologyForms schools in bays and waterways, especially around seagrass beds.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChriodorus atherinoidesFamilyHemiramphidae (Halfbeaks)OrderBeloniformes (Needle fishes)ClassActinopterygii (Ray-finned fishes)Maximum length25.0EnvironmentMarine; freshwater; brackish; pelagic-neriticClimateSubtropicalDistributionWestern Atlantic: southeastern Florida, USA and northern Gulf of Mexico to Cuba and Yucatan, Mexico.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