Southern sleeper shark (Somniosus antarcticus) fish species and information / pictures of Southern sleeper shark - Somniosus antarcticus

Southern sleeper shark (Somniosus antarcticus) fish species information

Scientific Name
Somniosus antarcticus

Common Name
Southern sleeper shark

Biology
Vertebrae: 36 - 38. Somniosus antarcticus differs from S. pacificus by the following characters: interdorsal space about 80% of prebranchial length (vs. 70%); height of first dorsal fin about 3.0% of precaudal length (PCL) (vs. 3.7%); height of second dorsal fin about 2.9% of PCL (vs. 3.4%); number of turns in spiral valve 36-41 (mode 39) (vs. 32-37, mode 33); precaudal vertebrae 30-31 (mode 30) (vs. 28-30, mode 29) (Ref. 50224).

Classification

Classified By

Whitley, 1939

Class

Sharks and Rays (Elasmobranchii)

Order

Bramble, Sleeper and Dogfish sharks (Squaliformes)

Family

Sleeper sharks (Somniosidae)

Distribution

Region

South Indo-Pacific and South Atlantic.

Distribution

South Indo-Pacific and South Atlantic.

Range

Unknown

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

485 m

Depth To - meters

1150 m

Zone

benthopelagic

Environment

Marine; benthopelagic; depth range 485 - 1150 m (Ref. 50224)

Trophic Level

s.e. 0.00 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

438 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5313 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Very high vulnerability (87 of 100)

Resilience

Unknown

Threat To Humans

Harmless

IUCN Red List Status

Data deficient (DD)