Common names from other countries
Elasmobranchii (hajar och rockor) (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Narcine: Greek, narke = numbness (Ref. 45335); atzi: Named in honor of Dr. James W. Atz, Curator Emeritus of the Department of Ichthyology, of the AMNH, in recognition of his many contributions to different aspects of ichthyology (Ref. 49866).
More on authors: Carvalho & Randall.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina bottenlevande; djupintervall ? - 27 m (Ref. 49866). Tropical; 25°N - 7°N, 58°E - 95°E (Ref. 114953)
Western Indian Ocean: Gulf of Oman and from both sides of the Bay of Bengal and Andaman Sea.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 36.0 cm TL hane/ej könsbestämd; (Ref. 49866)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Dorsal coloration composed of numerous small dark brown spots, equal to or smaller than eye diameter, oval disc and tail regions and within spiracular walls, coupled with faint large blotches, fewer in number, on dorsal disc area; first dorsal fin clearly taller, and with a longer base, than second dorsal fin; preorbital snout length not as great as preoral snout length; upper and lower tooth bands subequal in width and broadly circular in shape (Ref. 49866).
A benthic species in shallow coastal waters (Ref. 114953). Minimum depth from Ref. 58018. Maturity size for females at ca. 31 cm TL; birth size at ca. 11 cm TL (Ref. 114953).
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
de Carvalho, M.R. and J.E. Randall, 2003. Numbfishes from the Arabian Sea and surrounding gulfs, with the description of a new species from Oman (Chondrichthyes: Torpediniformes: Narcinidae). Ichthyol. Res. 50(1):59-66. (Ref. 49866)
IUCN Red List Status (Ref. 130435)
CITES (Ref. 128078)
Not Evaluated
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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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).
Trofisk nivå (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).