Biology:Hooktooth dogfish
| Hooktooth dogfish | |
|---|---|
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Scientific classification 
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| 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 hooktooth dogfish, Aculeola nigra, is a small, little-known dogfish, the only member of the genus Aculeola.
The type specimen is held at the National Natural History Museum, Santiago, Chile .
Description
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.
Distribution
They are found in the eastern South Pacific along the coast of South America from Peru to central Chile .
Habits and habitat
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.
References
- ↑ Ebert, D.A.; Concha, F.; Acuña, E.; Herman, K.; Kyne, P.M. (2020). "Aculeola nigra". IUCN Red List of Threatened Species 2020: e.T44653A124437350. doi:10.2305/IUCN.UK.2020-3.RLTS.T44653A124437350.en. https://www.iucnredlist.org/species/44653/124437350. Retrieved 19 November 2021.
- Ebert, D.A., Concha, F., Acuña, E., Herman, K. & Kyne, P.M. (2020). "Aculeola nigra". IUCN Red List of Threatened Species 2020. https://www.iucnredlist.org/species/44653/124437350. Retrieved 16 January 2021.
- FAO Species Catalogue, Volume 4, Parts 1 and 2: Sharks of the World
External links
Wikidata ☰ Q2601373 entry
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