Blackchin blacksmelt (Bathylagoides nigrigenys) fish species and information / pictures of Blackchin blacksmelt - Bathylagoides nigrigenys

Blackchin blacksmelt (Bathylagoides nigrigenys) fish species information

Scientific Name
Bathylagoides nigrigenys

Common Name
Blackchin blacksmelt

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 10-14; Anal spines: 0; Anal soft rays: 14 - 18; Vertebrae: 41 - 46. Deep body, relatively slender toward the end of caudal peduncle; maximum body depth slightly anterior to origin of dorsal fin in specimens 6 - 10.45 cm SL and at the level of the pectoral fin base in smaller specimens. Pectoral fins short, far from reaching origin of dorsal fin. Radial grooves present in the hind part of operculum. Few gill rakers at the inner surface of epibranchial of the first gill arch (Ref. 33679). Branchiostegal rays: 2.

Classification

Classified By

Parr, 1931

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

Deep-sea smelts (Bathylagidae)

Distribution

Region

Pacific and Indian. Eastern Pacific

Distribution

Pacific and Indian. Eastern Pacific: California Current region (Ref. 35604).

Range

22°N - 33°S

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

100 m

Depth To - meters

1500 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 100 - 1500 m (Ref. 33698), usually 200 - 300 m (Ref. 33679)

Trophic Level

3.36 s.e. 0.42 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

9.3 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

Fisheries: of no interest

Vulnerability

Moderate vulnerability (36 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