Scientific Name
Bathyagonus nigripinnis

Common Name
Blackfin poacher

Biology
Dorsal spines (total): 6 - 8; Dorsal soft rays (total): 6-7; Anal spines: 0; Anal soft rays: 7 - 9. Caudal rounded; lower 4 or 5 rays of pectorals thicker but membrane reaching nearly to ends; pelvic fins reduced (Ref. 6885). Light brown on dorsal surface, dusky light brown on ventral surface; dark blue on ventral surface of head; all fins very dark (Ref. 6885).

Classification

Classified By

Gilbert, 1890

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Poachers (Agonidae)

Distribution

Region

North Pacific

Distribution

North Pacific: Komandorski Island and Avachin Bay, Russia through the Aleutian chain to north of St. Mathew Island in the Bering Sea (Ref. 6793) and Eureka, northern California, USA.

Range

62°N - 34°N, 157°E - 120°W

Environment

Climate

Boreal

Water Temperature From

1 °C

Water Temperature To

4 °C

Depth From - meters

18 m

Depth To - meters

1290 m

Zone

demersal

Environment

Marine; demersal; depth range 18 - 1290 m (Ref. 50610), usually 400 - 700 m (Ref. 56575)

Trophic Level

3.25 s.e. 0.36 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

24.2 cm

Common Length

20.0 cm

Phylogenetic Diversity Index

PD50 = 0.5625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries:

Vulnerability

Moderate vulnerability (37 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