Élasmobranches (requins et raies) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin démersal; profondeur 20 - 70 m (Ref. 114953). Subtropical; 25°N - 3°N, 90°E - 123°E (Ref. 114953)
Northwest Pacific: off northern China, Viet Nam,Taiwan possibly including Philippines and from the Gulf of Thailand (de Carvalho, pers. comm.), probably more widely distributed. Probably synonymous to Narcine maculata. Indian Ocean: Bay of Bengal.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 32.0 cm TL mâle / non sexé; (Ref. 114953)
A benthic species found offshore on inner continental shelf. Size usually smaller to 25 cm TL; birth size at ca. 8 cm TL (Ref. 114953).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
de Carvalho, M.R., L.J.V. Compagno and P.R. Last, 1999. Narcinidae. Numbfishes. p. 1433-1442. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Vol. 3. Batoid fishes, chimaeras and bony fishes. Part 1 (Elopidae to Linophrynidae). FAO, Rome. (Ref. 9912)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Utilisations par l'homme
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00476 - 0.02897), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (22 of 100).
