Sawback angelshark

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Sawback angelshark
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Squatiniformes
Family: Squatinidae
Genus: Squatina
Species: S. aculeata
Binomial name
Squatina aculeata
Cuvier, 1829
Squatina aculeata distmap.png
Range of sawback angelshark (in blue)

The sawback angelshark (Squatina aculeata) is an angelshark of the family Squatinidae

Measurements[edit]

Mature ~ 100.0–124 cm TL; Max ~ 188 cm TL.

Identification[edit]

Colour: Are a dull grey to a light brown on back that has scarcely scattered with small irregular white spots and also with regular small dark brownish spots. No ocelli. Obtains dark blotches on head, back, the fin bases and tail. Body: Obtains large thorns atop its head in a row down its back. Has concave between eye, eye spiracle distance <1.5 x eye length. Has heavily fringed nasal barbels and including anterior nasal flaps.

Distribution & range[edit]

Eastern Atlantic: western Mediterranean, Morocco, Senegal, Guinea to Nigeria, then Gabon to Angola. 43°N - 19°S, 18°W - 30°E.

Climate & habitat[edit]

Subtropical; Offshore species, outer continental shelf and upper slope, demersal, marine. Usually found on a muddy bottom. 30 - 500m down.

Behaviour[edit]

Unknown.

Biology[edit]

Diet: feeds on small sharks, bony fishes, cuttlefish, and crustaceans. Reproduction: are ovoviviparous.

Status[edit]

IUCN Red List: Critically Endangered.

Threat to humans[edit]

Harmless.

Resilience & vulnerability[edit]

Low, minimum population doubling time: 4.5 – 14 years; high to very high vulnerability.

References[edit]

  1. ^ Morey, G., Serena, F., Mancusi, C., Coelho, R., Seisay, M., Litvinov, F. & Dulvy, N. 2007. Squatina aculeata. The IUCN Red List of Threatened Species 2007: e.T61417A12477164. https://dx.doi.org/10.2305/IUCN.UK.2007.RLTS.T61417A12477164.en. Downloaded on 26 October 2017.

External links[edit]