Pacific hatchet fish (Argyropelecus affinis) fish species and information / pictures of Pacific hatchet fish - Argyropelecus affinis

Pacific hatchet fish (Argyropelecus affinis) fish species information

Scientific Name
Argyropelecus affinis

Common Name
Pacific hatchet fish

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 8-9; Anal spines: 0; Anal soft rays: 12 - 14; Vertebrae: 38 - 41. Scales deciduous; swim bladder well developed, gas-filled, euphysoclistous; branchiostegal rays 10, 3 on epihyal; post-abdominal spines (iliac) short, equal in length; abdominal keels shallow (Ref. 4739).

Classification

Classified By

Garman, 1899

Class

Ray-finned fishes (Actinopterygii)

Order

Lightfishes and Dragonfishes (Stomiiformes)

Family

Marine hatchetfishes (Sternoptychidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: occasionally between Azores and Madeira (Ref. 4739), also from Senegal to Gulf of Guinea. Western Atlantic: 30?N-30?S, including the Gulf of Mexico (Ref. 27768). Northwest Atlantic: Canada (Ref. 5951). Indian Ocean: 20?N-20?S. Eastern Pacific: 35?N-35?S. Western Pacific: 30?N-10?S. South China Sea (Ref.74511).

Range

45°N - 45°S, 180°W - 180°E

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1 m

Depth To - meters

3872 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; oceanodromous (Ref. 51243); depth range 1 - 3872 m (Ref. 13608), usually 1 - 600 m (Ref. 35838)

Trophic Level

3.09 s.e. 0.19 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

8.4 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5078 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

Low vulnerability (21 of 100)

Resilience

High, minimum population doubling time less than 15 months (K=0.67)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated