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Squatina japonica Bleeker, 1858
JAPANESE ANGELSHARK
Life   Vertebrata   Fish   Squatinidae   Squatina


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Squatina japonica, Japanese angelshark : fisheries
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Squatina japonica Bleeker , 1858

Japanese angelshark Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Squatina japonica   AquaMaps   Data sources: GBIF OBIS
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Pictures | Google image Image of Squatina japonica (Japanese angelshark) Squatina japonica
Picture by FAO

Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa

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 ) ;   japonica: -ica (L.), belonging to: Japan, referring to Nagasaki, type locality. ( See ETYFish ) .
More on author: Bleeker .

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal. Subtropical; 41°N - 19°N, 111°E - 139°E (Ref. 54906 )

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

Northwest Pacific: Japan, Yellow Sea, Korea, and northern China.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 200 cm TL male/unsexed; (Ref. 247 )

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines : 0; Anal soft rays : 0. Japanese angelshark Squatina japonica has broad pectoral fins with rounded free rear tips, posterior margin nearly straight, inner margin strongly convex; nasal barbels simple and spatulate. Anterior nasal flaps smooth to weakly fringed; dermal folds on sides of head without lobes. Rear tip of inner margin of pelvic fins considerably anterior to origin of first dorsal; very short hypocercal tail. Rows of moderately large spines on midline of back and tail from head to dorsal fins and between fin bases, and on snout and above eyes. Body color blackish brown with small dark and pale spots; no ocelli (eye-like spot) (Ref. 247 , 31369 , 12951 ).

Biology     Glossary (e.g. epibenthic)

A little-known angelshark, found on or near the bottom (Ref. 247 ). Lives in sandy ground. A carnivore that eats benthic animals (Ref. 9137 ). Ovoviviparous (Ref. 50449 ). Utilized for human consumption and for preparation of shagreen (Ref. 247 ).

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

Ovoviviparous, embryos feed solely on yolk (Ref. 50449 ).

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

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 )

  Critically Endangered (CR)  (A2d); Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Traumatogenic





Human uses

Fisheries: minor commercial FAO - Fisheries: species profile ; Publication: search | FishSource |

More information

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes : genus , species | DiscoverLife | ECOTOX | FAO - Fisheries: species profile ; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome , nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go , Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201 ): 5.7 - 20.7, mean 17.3 °C (based on 123 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 ):  3.5   ±0.37 se; based on food items. 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). Price category (Ref. 80766 ):   Medium .

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Updated: 2024-04-25 22:11:00 gmt
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