Scientific Name
Gephyroberyx japonicus

Common Name
Big roughy

Biology
Dorsal spines (total): 8; Dorsal soft rays (total): 13-14; Anal spines: 3; Anal soft rays: 11

Classification

Classified By

D?derlein, 1883

Class

Ray-finned fishes (Actinopterygii)

Order

Sawbellies (Beryciformes)

Family

Slimeheads (Trachichthyidae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: Japan (Ref. 41299).

Range

Unknown

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

320 m

Depth To - meters

660 m

Zone

benthopelagic

Environment

Marine; benthopelagic; depth range 320 - 660 m (Ref. 58302)

Trophic Level

3.64 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

20.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.6250 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

High vulnerability (57 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated