Longsnout blacksmelt (Dolicholagus longirostris) fish species and information / pictures of Longsnout blacksmelt - Dolicholagus longirostris

Longsnout blacksmelt (Dolicholagus longirostris) fish species information

Scientific Name
Dolicholagus longirostris

Common Name
Longsnout blacksmelt

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 9-11; Anal spines: 0; Anal soft rays: 18 - 21; Vertebrae: 48 - 53. Head and body silver when fresh; no scale pocket markings; lateral line indistinct (Ref. 13608). Slender body. Jaws rounded and subequal at the tips (Ref. 37473). Body strongly elongated with almost equal depth. Caudal peduncle short and relatively narrow. Pectorals short, far from reaching origin of dorsal fin. Radial pattern noticeable at the hind lower part of operculum. Few gill rakers on the inner surface of epibranchial of first gill arch (Ref. 33679).

Classification

Classified By

Maul, 1948

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

Deep-sea smelts (Bathylagidae)

Distribution

Region

Widely distributed in tropical and subtropical seas. Eastern Atlantic

Distribution

Widely distributed in tropical and subtropical seas. Eastern Atlantic: south of Portugal to Madeira. Western Atlantic: Gulf of Mexico (Ref. 27768). Northwest Atlantic: Canada (Ref. 5951). Northwest Pacific: Japan (Ref. 559). Southwest Pacific: New Zealand (Ref. 5755). Eastern Pacific: California Current region (Ref. 35604).

Range

39°N - 21°S

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

200 m

Depth To - meters

945 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 200 - 945 m (Ref. 13608), usually 200 - 400 m (Ref. 33679)

Trophic Level

3.4 s.e. 0.45 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

17.5 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

Fisheries: of no interest

Vulnerability

Moderate vulnerability (45 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