Hooktooth dogfish
| Hooktooth dogfish | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | Squaliformes |
| Family: | Etmopteridae |
| Genus: | Aculeola F. de Buen, 1959 |
| Species: | A. nigra |
| Binomial name | |
| Aculeola nigra F. de Buen, 1959 | |
 | |
| 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
- Acuña & Romero (2004). Aculeola nigra. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006. Database entry includes justification for why this species is listed as data deficient
- "Aculeola nigra". Integrated Taxonomic Information System. Retrieved 5 February 2006.
- Froese, Rainer and Pauly, Daniel, eds. (2005). "Aculeola nigra" in FishBase. 09 2005 version.
- FAO Species Catalogue, Volume 4, Parts 1 and 2: Sharks of the World