Carcharhinus signatus (Poey, 1868)

Night shark

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Elasmobranchii \| Carcharhiniformes \| Carcharhinidae
Synonyms	Hypoprion signatus, Hypoprion bigelowi, Hypoprion longirostris, ... more
Common names	Requin de nuit, Tiburón de noche, Requin de nuit, ... more

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Image of Carcharhinus signatus (Night shark)

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AquaMaps Data sources: GBIF OBIS

Main reference

Compagno, L.J.V. 1984. (Ref. 244)
Other references | Biblio | Coordinator : Compagno, Leonard J.V. | Collaborators

Size / Weight / Age

Max length : 280 cm TL male/unsexed; (Ref. 244); common length : 200 cm TL male/unsexed; (Ref. 26999); max. published weight: 76.7 kg (Ref. 40637)

Environment

Benthopelagic; marine; depth range 0 - 600 m (Ref. 244), usually 50 - 100 m (Ref. 244)

Climate / Range

Subtropical; 11°C - 16°C (Ref. 244); 39°N - 43°S, 85°W - 15°E (Ref. 55190)

Western Atlantic: Delaware to Florida (USA), Bahamas, and Cuba; southern Brazil, Argentina. Eastern Atlantic: Senegal to Côte d'Ivoire, Ghana to Cameroon, Democratic Republic of the Congo, Angola, off northern Namibia (Ref. 5578).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Anal spines: 0. A slim shark with a very long, pointed snout, large eyes, and small jaws with oblique-cusped serrated upper teeth; dorsal fins low with elongated rear tips; interdorsal ridge present (Ref. 5578). Grey-brown above, white below; no conspicuous fin markings (Ref. 5578).

Coastal and semi-oceanic species found on or along outer continental and insular shelves (Ref. 244). Found to depths of 40 m (Ref. 26938). Forms schools (Ref. 244). Nocturnal (Ref. 5578), and feeding mainly on small bony fishes and squid (Ref. 244). Viviparous (Ref. 50449). Off West Africa, recorded water parameters at 90 to 285 m, where it was caught includes: temperature = 11 to 16°C; salinity = 36 ppt; oxygen = 1.81 ml/l (Ref. 244). Not known to be dangerous to people (Ref. 244).


IUCN Red List Status (Ref. 57073)	Threat to humans
Vulnerable (VU) (A2abd+3bd+4abd)	Harmless (Ref. 244)

Human uses
Fisheries: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Very Low, minimum population doubling time more than 14 years (tm=8-10; Fec=4; Tmax=17; K=0.12)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High to very high vulnerability (73 of 100)	Medium

Entered by Carpenter, Kent E.

Modified by Luna, Susan M.

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Page last modified by : elaxamana, 15 July 2009

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