HomeFish encyclopediaRay-finned fishesNeedle fishesNeedlefishesCalifornian needlefish Californian needlefish (Strongylura exilis) Scientific name: Strongylura exilis Girard, 1854 The Californian needlefish (Strongylura exilis) is a freshwater fish of the family Belonidae. Native range: Eastern Pacific, San Francisco in California, USA to Peru, including the Galapagos Islands. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 13-17; Anal spines: 0; Anal soft rays: 16 - 19; Vertebrae: 67 - 74. Caudal fin emarginate. Branchiostegal rays: 11-12.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameStrongylura exilisFamilyBelonidae (Needlefishes)OrderBeloniformes (Needle fishes)ClassActinopterygii (Ray-finned fishes)Maximum length91.0Common length50.0EnvironmentMarine; freshwater; brackish; pelagic-neriticClimateSubtropicalDistributionEastern Pacific: San Francisco in California, USA to Peru, including the Galapagos Islands.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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