HomeFish encyclopediaRay-finned fishesNeedle fishesHalfbeaksChoelo halfbeak Choelo halfbeak (Hyporhamphus gilli) Scientific name: Hyporhamphus gilli Meek & Hildebrand, 1923 The Choelo halfbeak (Hyporhamphus gilli) is a marine fish of the family Hemiramphidae. Native range: Eastern Pacific, Mexico to Peru. Particularly common in Gulf of California and Panama Bay. BiologyA coastal species that forms schools near the surface.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHyporhamphus gilliFamilyHemiramphidae (Halfbeaks)OrderBeloniformes (Needle fishes)ClassActinopterygii (Ray-finned fishes)Maximum length17.0Common length13.0EnvironmentMarine; pelagic-neriticClimateTropicalDistributionEastern Pacific: Mexico to Peru. Particularly common in Gulf of California and Panama Bay.Conservation status (IUCN)Least Concern (LC)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