HomeFish encyclopediaRay-finned fishesNeedle fishesNeedlefishesKeeltail needlefish Keeltail needlefish (Platybelone argalus argalus) Scientific name: Platybelone argalus argalus Lesueur, 1821 The Keeltail needlefish (Platybelone argalus argalus) is a marine fish of the family Belonidae. Native range: Western Atlantic, North Carolina, USA to Brazil, including the Bahamas, Gulf of Mexico, and Caribbean Sea. BiologyOccurs offshore; particularly abundant around islands; schools in sheltered parts of the reef. Feeds mainly on small fishes. Oviparous. Eggs may be found attached to objects in the water by tendrils on the egg's surfaceSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlatybelone argalus argalusFamilyBelonidae (Needlefishes)OrderBeloniformes (Needle fishes)ClassActinopterygii (Ray-finned fishes)Maximum length50.0Common length35.0EnvironmentMarine; reef-associated; depth range 0 - ? m, usually 0 - 2 mClimateSubtropicalDistributionWestern Atlantic: North Carolina, USA to Brazil, including the Bahamas, Gulf of Mexico, and Caribbean Sea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceHigh, 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