Japanese bullhead shark (Heterodontus japonicus) fish species and information / pictures of Japanese bullhead shark - Heterodontus japonicus

Japanese bullhead shark (Heterodontus japonicus) fish species information

Scientific Name
Heterodontus japonicus

Common Name
Japanese bullhead shark

Biology
Found near shore on the continental shelf, more commonly on rocky and kelp-covered bottom (Ref. 43278, 11230). Feeds on crustaceans, mollusks (including top shells), small fishes and sea urchins. Oviparous (Ref. 43278, 50449). Grabs prey by protruding its jaw with considerable distance.

Classification

Classified By

Maclay & Macleay, 1884

Class

Sharks and Rays (Elasmobranchii)

Order

Bullhead and Horn sharks (Heterodontiformes)

Family

Bullhead / horn / Port Jackson sharks (Heterodontidae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: off Japan, Korean Republic, northern China including Taiwan Island.

Range

43°N - 23°N, 118°E - 143°E

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

6 m

Depth To - meters

37 m

Zone

demersal

Environment

Marine; demersal; depth range 6 - 37 m (Ref. 247)

Trophic Level

3.62 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

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

120 cm

Common Length

Unknown 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

High vulnerability (59 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Fec=12)

Threat To Humans

Traumatogenic

IUCN Red List Status

Least Concern (LC)