Slender codling (Halargyreus johnsonii) fish species and information / pictures of Slender codling - Halargyreus johnsonii

Slender codling (Halargyreus johnsonii) fish species information

Scientific Name
Halargyreus johnsonii

Common Name
Slender codling

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 58-67; Anal spines: 0; Anal soft rays: 42 - 53; Vertebrae: 52 - 55. Eye large, its diameter about equal to snout length. Lower jaw slightly projecting; chin barbel absent. Elongate filament in first dorsal fin absent. Anal fin originating at about the midlength of body, deeply indented; pectoral fins not reaching to anal fin origin. Outer 2 pelvic rays elongate. Anterior gill rakers of 1st arch longer than gill filaments. Ventral light organ absent. Color is generally pale, silvery in fresh specimen; urobranchial cavity black (Refs. 1371, 43939).

Classification

Classified By

G?nther, 1862

Class

Ray-finned fishes (Actinopterygii)

Order

Cods (Gadiformes)

Family

Morid cods (Moridae)

Distribution

Region

Spotty records from the subarctic and subantarctic to temperate waters of the Atlantic Ocean. South Atlantic

Distribution

Spotty records from the subarctic and subantarctic to temperate waters of the Atlantic Ocean. South Atlantic: along the coast of Africa, on Walvis Ridge, near Discovery and Meteor seamounts and on the continental slope of Antarctica (Ref. 44938). Northwest Atlantic: Canada (Ref. 5951). North Pacific: northwestern Bering Sea and the Pacific Ocean south of the Gulf of Alaska to California and to Japan and the Sea of Okhotsk.

Range

63°N - 60°S, 86°W - 174°W

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

450 m

Depth To - meters

3000 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 450 - 3000 m (Ref. 50550)

Trophic Level

3.38 s.e. 0.47 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

56.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate vulnerability (43 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

Not Evaluated