Elasmobranchii (sharks and rays) > Squatiniformes
(Angel sharks) > Squatinidae
Etymology: Squatina: Latin for skate, which angel sharks superficially resemble, presumably tautonymous with Squalus squatina Linnaeus 1758 (no species mentioned). (See ETYFish); argentina: Presumably named for Argentina, described from off the coast of Buenos Aires (the province, not the city). (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 100 - 400 m (Ref. 57911). Subtropical; 19°S - 53°S, 68°W - 38°W (Ref. 54901)
Southwest Atlantic: southern Brazil to Argentina.
Size / Weight / Age
Maturity: Lm ?  range ? - 120 cm
Max length : 170 cm TL male/unsexed; (Ref. 247); common length : 100.0 cm TL male/unsexed; (Ref. 6077)
Found on the continental shelf and slope. Ovoviviparous (Ref. 50449).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Both ovaries are functional (Ref. 57911).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: subsistence fisheries
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 4 - 16.3, mean 6.1 °C (based on 18 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00276 - 0.01903), b=3.04 (2.81 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.1 ±0.6 se; based on diet studies.
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Fec 7-11).
Fishing Vulnerability (Ref. 59153
): Very high vulnerability (90 of 100).
Climate Vulnerability (Ref. 125649
): High to very high vulnerability (71 of 100).
Nutrients (Ref. 124155
): Calcium = 19.2 [2.1, 115.9] mg/100g ; Iron = 0.877 [0.168, 3.339] mg/100g ; Protein = 18.9 [16.8, 20.7] % ; Omega3 = 0.321 [0.142, 0.788] g/100g ; Selenium = 29.7 [8.0, 106.9] μg/100g ; VitaminA = 9.53 [2.11, 46.14] μg/100g ; Zinc = 0.413 [0.106, 1.518] mg/100g (wet weight);