Argentine angelshark

Argentine angelshark
Conservation status
	; Critically Endangered (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Squatiniformes
Family:	Squatinidae
Genus:	Squatina
Species:	S. argentina
Binomial name
	Squatina argentina; (Marini, 1930)
	Range of Argentine angelshark (in blue)

The Argentine angelshark (Squatina argentina) is an angelshark of the family Squatinidae.

Measurements

Born: N/A.; Mature: ~ 100.0 cm - 120 cm TL; Max: 138 (?170) cm TL.

Identification

Colour: Are a purplish-brown color with many scattered dark brown spots (with no white), that are mostly in circular groups around a central spot. No ocelli. Obtains paler dorsal fins. Body: Has simple spatulate nasal barbels. Also slightly fringed or a smooth anterior nasal flaps with no triangular lobes on lateral head folds. Has concave between its eyes. Obtains enlarged thorns on snout, and not back. Its pectoral fins are large, broad, and obtusely angular. Convex leading edge forming a very distinct 'shoulder'.

Distribution & range

Southwest Atlantic: from southern Brazil down south to Patagonia. 19°S - 53°S, 68°W - 38°W.

Climate & habitat

Subtropical; continental shelf and upper slope, demersal, marine. Found 50 – 320 m (usually 100 – 400 m) down.

Behaviour

Unknown.

Biology

Diet: Feeds on demersal fishes, shrimp, and squid. Reproduction: Are ovoviviparous, birth about 7 to 11 pups per litter.

Threat to humans

Traumatogenic.

Resilience & vulnerability

Very low, minimum population doubling time more than 14 years; high to very high vulnerability.

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gollark: The closest thing to ethics we did was philosophy for something like six hours a year due to weird timetabling, which actually was pretty good.

References

Cuevas, J.M., Awruch, C.A., Barreto, R., Charvet, P., Chiaramonte, G.E., Dolphine, P., Faria, V., Paesch, L. & Rincon, G. 2019. Squatina argentina. The IUCN Red List of Threatened Species 2019: e.T39329A116841596. https://doi.org/10.2305/IUCN.UK.2019-1.RLTS.T39329A116841596.en. Downloaded on 26 July 2019.

Froese, Rainer and Pauly, Daniel, eds. (2006). "Squatina argentina" in FishBase. July 2006 version.
Compagno, Dando, & Fowler, Sharks of the World, Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2

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[iucn-1] Cuevas, J.M., Awruch, C.A., Barreto, R., Charvet, P., Chiaramonte, G.E., Dolphine, P., Faria, V., Paesch, L. & Rincon, G. 2019. Squatina argentina. The IUCN Red List of Threatened Species 2019: e.T39329A116841596. https://doi.org/10.2305/IUCN.UK.2019-1.RLTS.T39329A116841596.en. Downloaded on 26 July 2019.