Heterodontus galeatus

Crested Hornshark | Crested Bull Shark | Crested Bullhead Shark | Crested Shark
Heterodontus galeatusHeterodontus galeatus, Jervis Bay, NSW, Photo: Graham Edgar
Heterodontus galeatusHeterodontus galeatus, Port Stephens, NSW, Photo: Tom Davis
Heterodontus galeatusHeterodontus galeatus, Egg cases. Coffs Harbour, NSW, Photo: Ian Shaw
Heterodontus galeatusHeterodontus galeatus, Sydney, NSW, Photo: Rick Stuart-Smith
Heterodontus galeatusHeterodontus galeatus, Ulladulla, NSW, Photo: Andrew Green
Heterodontus galeatusHeterodontus galeatus, Montague Is, NSW, Photo: Andrew Green
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Heterodontus galeatus
Heterodontus galeatus
Heterodontus galeatus
Heterodontus galeatus
Heterodontus galeatus
Heterodontus galeatus


Temperate Australasia


Similar to the Port Jackson Shark (Heterodontus portusjacksoni) of southern Australian waters, but possessing higher crests above the eyes, broad dark bars rather than oblique lines on side. Both species have spirally flanged eggs, which are twisted into reef crevices, with young developing over a period of a year. Forage on molluscs and other bottom-dwelling invertebrates at night, returning to particular caves and ledges during day. Not dangerous but should be handled with caution because of a venomous barb in front of each dorsal fin.


Max Size: 152 cm

Sea Temperature Range: 15.3-24.6°C

Depth: 1-90m

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Least Concern

Occurrence: Frequent (15.1% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Solitary (1 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney