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