Elasmobranchii (sharks and rays) > Squatiniformes
(Angel sharks) > Squatinidae
Etymology: Squatina: Latin, squatina, -ae = a kind of shark (Ref. 45335).
Environment / Climate / Range
Marine; demersal; depth range 100 - 400 m (Ref. 57911). Subtropical; 19°S - 53°S, 68°W - 38°W (Ref. 54901)
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)
Southwest Atlantic: southern Brazil to Argentina.
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. 96402)
CITES (Ref. 94142)
Threat to humans
Fisheries: subsistence fisheries
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00277 - 0.01894), b=3.04 (2.80 - 3.28), based on LWR estimates for this Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.1 ±0.6 se; Based on diet studies.
Resilience (Ref. 69278
): Very Low, minimum population doubling time more than 14 years (Fec 7-11).
Vulnerability (Ref. 59153
): High to very high vulnerability (73 of 100) .