Richardson's snaggletooth (Astronesthes richardsoni) fish species and information / pictures of Richardson's snaggletooth - Astronesthes richardsoni

Richardson's snaggletooth (Astronesthes richardsoni) fish species information

Scientific Name
Astronesthes richardsoni

Common Name
Richardson's snaggletooth

Biology
Dorsal soft rays (total): 15-17; Anal soft rays: 12 - 15. Barbel without pigment, tapering to end, lacking swelling or bulb (Ref. 37473). Body moderately elongate and slender. Maxillary teeth closely spaced. Serial photophores not broken into small groups. Luminous patches present on margin of operculum. Black in color (Ref. 37039).

Classification

Classified By

Poey, 1852

Class

Ray-finned fishes (Actinopterygii)

Order

Lightfishes and Dragonfishes (Stomiiformes)

Family

Barbeled dragonfishes (Stomiidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: Mauritania south to Angola; reported from central Namibia (Ref. 27121). Western Atlantic: Gulf of Mexico and Bahamas area; and across the Atlantic (20?N-10?S). One specimen known from the southwest Atlantic (25?27'S, 35?56'W).

Range

20°N - 26°S

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

275 m

Depth To - meters

1000 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; oceanodromous (Ref. 51243); depth range 275 - 1000 m (Ref. 58426)

Trophic Level

3.93 s.e. 0.64 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

15.9 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low to moderate vulnerability (26 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3)

Threat To Humans

  Harmless

IUCN Red List Status

  Least Concern (LC)