Tropical hatchetfish (Argyropelecus lychnus) fish species and information / pictures of Tropical hatchetfish - Argyropelecus lychnus

Tropical hatchetfish (Argyropelecus lychnus) fish species information

Scientific Name
Argyropelecus lychnus

Common Name
Tropical hatchetfish

Biology
Dorsal spines : 0; Dorsal soft rays : 9; Anal spines: 0; Anal soft rays: 12; Vertebrae: 35 - 37. Branchiostegal rays: 10. Lower preopercular spine downward and curved forward, upper preopercular spine curved outward. Two postabdominal spines directed ventrally.

Classification

Classified By

Garman, 1899

Class

Ray-finned fishes (Actinopterygii)

Order

Lightfishes and Dragonfishes (Stomiiformes)

Family

Marine hatchetfishes (Sternoptychidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: Papua New Guinea and New Zealand. Eastern Pacific: southern British Columbia, Canada to California, USA and farther south.

Range

Unknown

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

200 m

Depth To - meters

700 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 200 - 700 m

Trophic Level

3.04 s.e. 0.16 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

5.9 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

Unknown

Vulnerability

Low vulnerability (15 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated