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Centroscyllium granulatum

(Granular Dogfish)

Overview

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Family : Sleeper sharks ; A poorly known deepwater shark caught at a depth of 448 m [1].

Common Names

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Click on the language to view common names.

Common Names in Dutch:

Gekorrelde Lantaarnhaai

Common Names in English:

Granular Dogfish

Common Names in French:

Aiguillat Râpe, Aiguillat Râpe

Common Names in German:

Grants Malawibuntbarsch

Common Names in Mandarin Chinese:

長尾霞鯊, 長尾霞鯊, 长尾霞鲨

Common Names in Spanish:

Tollo Negro Luminoso, Tollo Negro Raspa

Description

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Family Dalatiidae

Distribution: Antarctic to Arctic , Northern and Southern Hemisperes, coastal and oceanic . Includes four subfamilies (Etmopterinae, Somniosinae, Oxynotinae, and Dalatiinae). Except in Etmopterinae , most members without spines in dorsal fin; luminous organs present (except in Somniosus pacificus), appearing as black dots mainly on ventral surface. Etmopterinae has grooved spines in both dorsal fins, caudal fin with subterminal notch . Oxynotinae has very high, and compressed body, triangular in cross section ; dorsal fins very high, each with a spine[2]. The subfamilies are sometimes separated as independent families by various authors : Oxynotidae[1]; Somniosidae (dorsal fins without spines, first dorsal fin originating in front of pelvic fins but much closer to pectoral fins) and Etmopteridae (dorsal fin with spines, teeth with prominent central cusp flanked by one or two smaller cusplets )[3] . Dalatiidae has dorsal fins without spines, first dorsal fin originating in front of pelvic fins but much closer to pelvic fins[3].The family Dalatiidae belongs to the Class Elasmobranchii (sharks and rays) and the Order Squaliformes. It contains 18 genera and 49 species. It may be found in Marine environments and is primarily Marine. Members of this family are not used in the aquarium trade. Reproductively, most members of this family are bearers. The main mode of swimming of adult fish in this family is subcarangiform. Etymology of this family name : Greek, dalos, -ou = torch

Habitat

Biome: Saltwater . Bathypelagic.

Ecology: A poorly known deepwater shark . Compagno (in prep. a) notes that the species has been recorded at 400 to 448 m depth on the upper continental slope . The holotype was taken at 448 m (Günther 1887). Recorded in the Chilean deep-sea shrimp fishery at depths of 300 to 500 m (Acuña and Villaroel 2002). Lamilla (2003) reports a maximum size of 61.5 cm total length (TL ); size at birth 13 cm TL; minimum size of mature males 31 cm TL; and, a maximum fecundity of 16. Nothing else known of its biology .[4]


List of Habitats :10.1Marine Oceanic - Epipelagic (0-200m)

Taxonomy

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Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: Group expert : Compagno L.J.V., Data last modified by FishBase 27-Oct-2000

Similar Species

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Members of the genus Centroscyllium

ZipcodeZoo has pages for 12 species and subspecies in this genus:

C. excelsum (Highfin Dogfish) · C. fabricci · C. fabrici · C. fabricii (Black Dogfish) · C. granulatum (Granular Dogfish) · C. nigrum · C. kamoharai (Bareskin Dogfish) · C. nigrum (Pacific Black Dogfish) · C. ornatum (Ornate Dogfish) · C. retteri · C. ritteri (Whitefin Dogfish) · C. ruscosum

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 01, 2008:

Identifiers

Footnotes

  1. 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, Vol. 4, Part 1), 249 p. [back]
  2. Wheeler, A. (1977). Das grosse Buch der Fische. Eugen Ulmer GmbH & Co. Stuttgart. 356 p. [back]
  3. Ebert, D.A. (2003). Sharks, rays and chimaeras of California. California Natural History Guides No. 71. University of California Press, 284pp. [back]
  4. Acuña, E. & Kyne, P.M. 2004. In IUCN 2008. 2008 IUCN Red List of Threatened Species. IUCNRedList.org. Downloaded July 19, 2008. [back]
Last Revised: 7/2/2009