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Author: (Risso, 1826)

Squalus blainvillei (Risso, 1826)

Diagnosis: anterior nasal flap with a small but distinct lobe. Inner corner of pectoral fin blunt to rounded, distal margin weakly concave; origin of first dorsal spine on a vertical with axil of pectoral edge (juveniles) or with inner corner of pectoral fin (adults); second dorsal fin much smaller than first. Denticles on sides of body below first dorsal fin tridentate in juveniles and adults. Colour: upper surface of body grey to grey-brown, without white spots, lower surface white, posterior edges of fins distinctly (juveniles) or slightly (adults) edged with white.

Habitat: benthic at intermediate depths; rather sluggish. Food: fishes and to a lesser extent squids and benthic invertebrates. Reproduction: ovoviviparous, one litter every two years of 4-9 embryos.

Distribution: Morocco northward to Bay of Biscay, also in the Mediterranean and Black Sea. Elsewhere, southward to tropical West Africa; also South Carolina and in the Gulf of Mexico, Japan, Hawaiian Is., and all three oceans in the Southern Hemisphere.

Eggs, embryonic and young stages. Ranzi, 1932: 243-250, fig. 22-27 | Capapé, 1974a: 239.

Blainville's dogfish (Squalus blainvillei)