The hooktooth dogfish, Aculeola nigra, is a small, little-known dogfish, the only member of the genus Aculeola.
Hooktooth dogfish | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Subclass: | Elasmobranchii |
Subdivision: | Selachimorpha |
Order: | Squaliformes |
Family: | Etmopteridae |
Genus: | Aculeola F. de Buen, 1959 |
Species: | A. nigra
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Binomial name | |
Aculeola nigra F. de Buen, 1959
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Range of hooktooth dogfish (in blue) |
The type specimen is held at the National Natural History Museum, Santiago, Chile.
The hooktooth dogfish has a blunt, flattened snout, very large eyes, a relatively long distance from the eye to the first gill slit, small grooved dorsal spines, a first dorsal fin about halfway between the pectoral and pelvic fins, and a broad caudal fin. They are black with a maximum length of only 60 cm.
They are found in the eastern South Pacific along the coast of South America from Peru to central Chile.
This shark is a little-known, yet common, shark that lives at depths between 110 and 560 m. They are ovoviviparous, with at least three pups per litter. They probably eat bony fish and invertebrates.
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