Stout beardfish (Polymixia nobilis) fish species and information / pictures of Stout beardfish - Polymixia nobilis

Stout beardfish (Polymixia nobilis) fish species information

Scientific Name
Polymixia nobilis

Common Name
Stout beardfish

Biology
Dorsal spines : 5; Dorsal soft rays : 34-37; Anal spines: 4; Anal soft rays: 15 - 16; Vertebrae: 29. Dark brownish grey in color, silvery below; black blotch on distal part of anterior dorsal rays. Snout blunt, rounded, adipose. Hyoid barbels present.

Classification

Classified By

Lowe, 1838

Class

Ray-finned fishes (Actinopterygii)

Order

Beardfishes (Polymixiiformes)

Family

Beardfishes (Polymixiidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: Azores, Madeira, the Canary Islands, Cape Verde and St. Helena Islands. Western Atlantic: West Indies, Saba Bank, Leeward Islands, off northern coast of Cuba and west of the Bahamas. Reported to occur in the northern coast of South America.

Range

Unknown

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

100 m

Depth To - meters

770 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range 100 - 770 m , usually 360 - 540 m

Trophic Level

4.2 s.e. 0.73 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

48.0 cm

Common Length

30.0 cm

Phylogenetic Diversity Index

PD50 = 0.5029 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial

Vulnerability

High vulnerability (63 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2-4)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated