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Squatina nebulosa, Clouded angelshark
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Clouded angelshark
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Squatina nebulosa
Female picture by
Harris, M.
Elasmobranchii (sharks and rays) >
Squatiniformes
(Angel sharks) >
Squatinidae
(Angel sharks)
Etymology:
Squatina:
Latin for skate, which angel sharks superficially resemble, presumably tautonymous with
Squalus squatina
Linnaeus 1758 (no species mentioned). (
See ETYFish
)
;
nebulosa:
Latin for cloudy or dark, referring to its brown-black marbled coloration. (
See ETYFish
)
.
More on author:
Regan
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 200 m (Ref.
54907
). Deep-water; 47°N - 22°N, 119°E - 142°E (Ref.
54907
)
Northwest Pacific: southeastern Sea of Japan to Taiwan, including Japan, Korea, China. Reported from the northern shelf of the South China Sea (Ref.
12082
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 163.0 cm TL (female)
Found on the continental shelves. Ovoviviparous (Ref.
50449
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Ovoviviparous, embryos feed solely on yolk (Ref.
50449
).
Compagno, L.J.V.
, 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref.
247
)
IUCN Red List Status (Ref.
130435
)
Endangered (EN)
(A2d); Date assessed:
22 August 2018
CITES
Not Evaluated
Not Evaluated
Threat to humans
Traumatogenic
Human uses
FAO - Fisheries:
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; Publication:
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Estimates based on models
Preferred temperature (Ref.
123201
): 11.8 - 23.5, mean 18.1 °C (based on 106 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00293 - 0.01558), b=3.07 (2.88 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.1 ±0.6 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153
): Very high vulnerability (90 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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