HomeFish encyclopediaRay-finned fishesSilversidesSilversidesPikehead hardyhead Pikehead hardyhead (Kestratherina esox) Scientific name: Kestratherina esox Klunzinger, 1872 The Pikehead hardyhead (Kestratherina esox) is a brackish-water fish of the family Atherinidae. Native range: Eastern Indian Ocean, endemic to southern Australia. BiologyFound in inshore waters. A schooling species.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameKestratherina esoxFamilyAtherinidae (Silversides)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length15.0EnvironmentMarine; brackish; pelagic-neriticClimateTemperateDistributionEastern Indian Ocean: endemic to southern Australia.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