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Narke capensis  (Gmelin, 1789)

Onefin electric ray
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Narke capensis   AquaMaps   Data sources: GBIF OBIS
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Image of Narke capensis (Onefin electric ray)
Narke capensis
Picture by Zsilavecz, G.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Torpediniformes (Electric rays) > Narkidae (Sleeper rays)
Etymology: Narke: Greek, narke = numbness (Ref. 45335).

Environment / Climate / Range Ecology

Marine; demersal; depth range 20 - 183 m (Ref. 6589).   Subtropical, preferred ?

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southeast Atlantic: Cape Point to central Natal, South Africa. Possibly occurring in Mozambique and Madagascar (Ref. 5578).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 38.0 cm TL male/unsexed; (Ref. 5578)

Short description Morphology | Morphometrics

Small ray with an almost circular disc and an elongated caudal fin (Ref. 5578). Yellowish-brown above with yellowish patches on upper tail, yellow with brown margins below (Ref. 5578).

Biology     Glossary (e.g. epibenthic)

Occurs offshore on the shelf; also common on sandy and muddy bottoms at 20-115 m (Ref. 5578). Feeds mainly on polychaetes (Ref. 5578). Capable of giving a powerful shock (Ref. 5578). Incidental catch of trawlers (Ref. 5578).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Carvalho, Marcelo | Collaborators

Compagno, L.J.V., 1986. Narkidae. p. 113-114. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 6589)

IUCN Red List Status (Ref. 115185)

  Data deficient (DD) 

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Other (Ref. 5578)




Human uses

FAO(Publication : search) | FisheriesWiki | Sea Around Us

More information

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Ecology
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Summary page | Point data | Common names | Photos

Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6252   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.26 se; Based on food items.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Vulnerability (Ref. 59153):  Low vulnerability (20 of 100) .