Japanese cusk (Glyptophidium japonicum) fish species and information / pictures of Japanese cusk - Glyptophidium japonicum

Japanese cusk (Glyptophidium japonicum) fish species information

Scientific Name
Glyptophidium japonicum

Common Name
Japanese cusk

Biology
Dorsal soft rays (total): 123-134; Anal soft rays: 98 - 108. Prominent head and body with an attenuate caudal part; head bones with large, thin crests; eye equal to or greater than length of snout; opercular spine broad, flat and weak; basibranchial with 2 median and a pair of tooth patches; long gill rakers on anterior gill arch 21-26 (Ref. 34024). Caudal fin rays 8-10; stem of pseudobranchial filament pale, filaments 10-15; anterior anal fin ray below 28th-31st dorsal fin rays (Ref. 34024).

Classification

Classified By

Kamohara, 1936

Class

Ray-finned fishes (Actinopterygii)

Order

Cusk eels (Ophidiiformes)

Family

Cusk-eels (Ophidiidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: Japan to off Northwest Australia.

Range

Unknown

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

145 m

Depth To - meters

595 m

Zone

benthopelagic

Environment

Marine; benthopelagic; depth range 145 - 595 m (Ref. 34024)

Trophic Level

3.52 s.e. 0.58 Based on size and trophs of closest relatives

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

22.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low to moderate vulnerability (28 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated