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Narcine timlei, Spotted numbfish : aquarium
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Narcine timlei
Picture by
Devarapalli, P.
Elasmobranchii (sharks and rays) >
Torpediniformes
(Electric rays) >
Narcinidae
(Numbfishes)
Etymology:
Narcine:
Greek, narke = numbness (Ref.
45335
)
.
More on authors:
Bloch
&
Schneider
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal. Tropical; 24°N - 8°S, 62°E - 116°E (Ref.
114953
)
Indo-West Pacific: Arabian Sea (Pakistan) to South-East Asia (Thailand, Malaysia, Singapore, Indonesia, Vietnam and southern China).
Length at first maturity / Size / Weight / Age
Maturity: L
m
 
?
, range 14 - ? cm
Max length : 38.0 cm TL male/unsexed; (Ref.
9912
)
Subtrapezoidal disc, a uniform purplish-brown, brown, or tan dorsal coloration (devoid of any other markings), and wide, broadly rounded tooth bands (Ref.
49866
).
Found in continental waters, both inshore and offshore (Ref.
9912
). Occurs over soft bottoms; feeds on bottom-living organisms; possesses electric organs (Ref.
68964
). Biology little known (Ref.
9912
). Gravid females produces 2-3 pups during each gestation. Males mature at ca. 14 cm TL; born at ca. 6 cm TL (Ref.
114953
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
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
)
Vulnerable (VU)
(A2d); Date assessed:
09 October 2020
CITES
Not Evaluated
Not Evaluated
Threat to humans
Other (Ref.
10011
)
Human uses
Aquarium: commercial
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 21.9 - 28.6, mean 27.1 °C (based on 1313 cells).
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
).
Trophic level (Ref.
69278
): 3.1 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153
): Low to moderate vulnerability (28 of 100).
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Page last modified by :
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- 20 July 2016
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