Crested bullhead shark (Heterodontus galeatus) fish species and information / pictures of Crested bullhead shark - Heterodontus galeatus

Crested bullhead shark (Heterodontus galeatus) fish species information

Scientific Name
Heterodontus galeatus

Common Name
Crested bullhead shark

Biology
A moderately common benthic and epibenthic shark found on the continental shelf (Ref. 247, 43278). Occurs from close inshore to about 93 m depth (Ref. 247, 43278). Feeds primarily on sea urchins, but also on crustaceans, mollusks, and small fishes (Ref. 31369). Oviparous, egg cases spirally flanged and with long tendrils (Ref. 6871). Hatches at about 22 cm (Ref. 6871).

Classification

Classified By

G?nther, 1870

Class

Sharks and Rays (Elasmobranchii)

Order

Bullhead and Horn sharks (Heterodontiformes)

Family

Bullhead / horn / Port Jackson sharks (Heterodontidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: eastern Australia.

Range

27°S - 35°S, 150°E - 155°E

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

93 m

Zone

reef-associated

Environment

Marine; reef-associated; depth range 0 - 93 m (Ref. 54545)

Trophic Level

3.67 s.e. 0.53 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

True

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

152 cm

Common Length

122 cm

Phylogenetic Diversity Index

PD50 = 0.5059 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

Very high vulnerability (87 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (tm=11.8)

Threat To Humans

Traumatogenic

IUCN Red List Status

Least Concern (LC)