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).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 10 - 100 m (Ref. 57911). Subtropical; 20°S - 40°S, 60°W - 40°W (Ref. 57911)
Southwest Atlantic: southern Brazil to Argentina.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 72 - ? cm
Max length : 87.0 cm TL male/unsexed; (Ref. 57911); 91.0 cm TL (female)
This species is found throughout the year in coastal waters.
3-9 embryos, only the left ovary is functional.
Soto, J.M.R., 2001. Annotated systematic checklist and bibliography of the coastal and oceanic fauna of Brazil. I. Sharks. Mare Magnum 1(1):51-119. (Ref. 53443)
IUCN Red List Status (Ref. 126983)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00280 - 0.01965), b=3.04 (2.80 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Fec=3-9).
Fishing Vulnerability (Ref. 59153
): High vulnerability (56 of 100).