HomeMarine aquarium fishOther marine fishPort Jackson shark Port Jackson shark (Heterodontus portusjacksoni) Scientific name: Heterodontus portusjacksoni Meyer, 1793 The Port Jackson shark (Heterodontus portusjacksoni) is a marine fish of the family Heterodontidae. BiologyA common shark of the continental shelves, from close inshore at the intertidal zone to 275 m. Segregates by sex and maturity stage. Nocturnal, hides in caves and rocky gullies during the day. Feeds on benthic invertebrates, primarily echinoderms. Oviparous. Eggs with spiral flanges but lack tendrils. Undergoes yearly migrations to spawning sites during breeding season. Considered harmless to people, but can deliver a painful nip when provoked.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHeterodontus portusjacksoniFamilyHeterodontidae (Bullhead / horn / Port Jackson sharks)OrderHeterodontiformes (Bullhead and Horn sharks)ClassElasmobranchii (Sharks and Rays)Maximum length165Common length137Depth range0–275 m (0–902 ft)EnvironmentMarine; demersal; oceanodromous; depth range 0 - 275 mClimateSubtropicalDistributionWestern Pacific: southern Australia (including Western Australia) and one record from New Zealand. Heterodontus bona-spei from South Africa probably refers to this species.Conservation status (IUCN)Least Concern (LC)Threat to humansTraumatogenicUsesFisheries: minor commercial; aquarium: public aquariumsResilienceLow, minimum population doubling time 4.5 - 14 years (tm=8-10; Fec=10) More other marine fishHorn sharkHeterodontus francisciWhiptail stingrayDasyatis brevisWhitespotted bullhead sharkHeterodontus ramalheiraZebra bullhead sharkHeterodontus zebraSwellsharkCephaloscyllium ventriosumLined catsharkHalaelurus lineatusSee all other marine fish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026