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 Crested bullhead shark (Heterodontus galatus)

  Index
> Photo
> Range Map
> Systematics
> Name
> Appearance
> Coloration
> Distribution
> Biology
> Feeding
> Size
> Reproduction
> Similar Species
> Endangerment
> Danger to Humans

 Photo

Crested bullhead shark
No image of Crested bullhead shark found in the Shark Database
 Range Map

Earth Map


 Systematics

Phylum: Vertebates (Chordata)

Class: Carlilagenous Fishes (Chondrichthyes)
  Order: Bullhead sharks (Heterodontiformes)
    Family: Bullhead sharks (Heterodontidae)
      Genus: Heterodontus (Heterodontus)


 Name

Scientific: Heterodontus galatus
German: Kamm-Stierkopfhai
English: Crested bullhead shark
French: Requin dormeur a crete
Spanish: Dormilon carenado


 Appearance

Cylindrical trunk with conical head. Small spiracles behind and below the eyes. Very short snout, bluntly rounded. Very high supraorbital ridges. Both dorsal fins with a stout fin spine. Origin of first dorsal fin behind midbase of pectoral fins. Origin of second dorsal fin mid of the pelvic fins" free rear ends. Large pectoral fins. Anal fin present.

 Coloration

Dark (blackish) broad bands on head, back and tail. Brownish (light) basic collar.

 Distribution

Western South Pacific: Australia (Queensland, New South Wales).

 Biology

A common bottom oriented shark over the continental shelf, from close inshore down to about 90 m.

 Feeding

Feeds primarily on sea urchins, and crustaceans, molluscs and small fishes.

 Size

Maximum length about 150 cm, average size between 100 and 120 cm.

 Reproduction

Oviparous (egg laying). Egg cases are simply built, with narrow, paired spiral flanges, which are diagonal to egg axis (6 to 7 turns visible on sides). Long and slender tendrils on egg apex. Free laying eggs need about 5 months to hatch. Size at birth about 17 cm. Females reach maturity after about 11 to 12 years.

 Similar Species

Other bullhead sharks have a similar appearance but the very high supraorbital ridge is very distinctive.

 Endangerment

Status in the IUCN Red List:


No Entry found in Red List.


 Danger to Humans

Harmless.



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