Largenose grenadier (Coryphaenoides nasutus) fish species and information / pictures of Largenose grenadier - Coryphaenoides nasutus

Largenose grenadier (Coryphaenoides nasutus) fish species information

Scientific Name
Coryphaenoides nasutus

Common Name
Largenose grenadier

Biology
Dorsal spines (total): 2; Anal spines: 0. Head almost completely scaled except for underside of snout. Snout short, pointed, with a large conical tubular scale at its tip and smaller tubercles at its lateral angles; suborbital ridge prominent; mouth small, its rictus restricted posteriorly by lip folds. Body scales with long, appressed spinules in convergent rows, except those on nape and chest, which are arranged in divergent rows. Pyloric caeca 8 to 12. Ground color somewhat tawny; oral cavity grayish; branchial cavity blackish; orbital rims blackish; fins dusky, darker distally.

Classification

Classified By

G?nther, 1877

Class

Ray-finned fishes (Actinopterygii)

Order

Cods (Gadiformes)

Family

Grenadiers or rattails (Macrouridae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: northern Japan to East China Sea.

Range

48°N - 24°N, 120°E - 155°E

Environment

Climate

Deep-water

Water Temperature From

2 °C

Water Temperature To

5 °C

Depth From - meters

625 m

Depth To - meters

1180 m

Zone

bathydemersal

Environment

Marine; bathydemersal; non-migratory; depth range 625 - 1180 m (Ref. 1371)

Trophic Level

3.56 s.e. 0.46 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

47.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

Moderate to high vulnerability (50 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)