Kerguelen sandpaper skate (Bathyraja irrasa) fish species and information / pictures of Kerguelen sandpaper skate - Bathyraja irrasa

Kerguelen sandpaper skate (Bathyraja irrasa) fish species information

Scientific Name
Bathyraja irrasa

Common Name
Kerguelen sandpaper skate

Biology
Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 11.38 cm long and 7.36 cm wide (Ref. 41249).

Classification

Classified By

Hureau & Ozouf-Costaz, 1980

Class

Sharks and Rays (Elasmobranchii)

Order

Skates and Rays (Rajiformes)

Family

Skates (Rajidae)

Distribution

Region

Southern Ocean

Distribution

Southern Ocean: around the Kerguelen Islands.

Range

48°S - 51°S

Environment

Climate

Polar

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

1218 m

Zone

demersal

Environment

Marine; demersal; depth range ? - 1218 m (Ref. 58018)

Trophic Level

3.96 s.e. 0.71 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

120 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

High to very high vulnerability (67 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be

Threat To Humans

Harmless

IUCN Red List Status

Near Threatened (NT)