HomeFish encyclopediaRay-finned fishesNeedle fishesHalfbeaksMexican halfbeak Mexican halfbeak (Hyporhamphus mexicanus) Scientific name: Hyporhamphus mexicanus ?lvarez, 1959 The Mexican halfbeak (Hyporhamphus mexicanus) is a freshwater fish of the family Hemiramphidae. Native range: Central America, freshwater streams and lagoons of the Usumacinta River drainage in Pet?n, Guatemala westward to the Coatzacoalcos River in M?xico. Species factsScientific nameHyporhamphus mexicanusFamilyHemiramphidae (Halfbeaks)OrderBeloniformes (Needle fishes)ClassActinopterygii (Ray-finned fishes)Maximum length16.1EnvironmentFreshwater; pelagicClimateTropicalDistributionCentral America: freshwater streams and lagoons of the Usumacinta River drainage in Pet?n, Guatemala westward to the Coatzacoalcos River in M?xico.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