Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (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); formosa: Named for Formosa (Taiwan), type locality. (See ETYFish).

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

marino batidemersale; distribuzione batimetrica 183 - 220 m (Ref. 54905). Deep-water; 24°N - 22°N, 120°E - 121°E (Ref. 54905)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

North Western Pacific: East coast of Taiwan and Ryuku Islands to SE Japan to Izu Peninsula (Ref. 84150); misidentifiction of S. caillieti in the Philippines (Ref. 86399).

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 55.4 cm TL maschio/sesso non determinato; (Ref. 84150)

Short description Morfologia | Morfometria

Spine dorsali (totale): 0. Taiwan angelshark Squatina formosa has broad pectoral fins with outer corner more obtuse and free rear tips narrowly subangular; nasal barbels apparently simple, narrow and tapered. Anterior nasal flaps smooth to weakly fringed; dermal folds on sides of head possibly with a triangular lobe. Rear tip of inner margin of pelvic fins reaching little beyond origin of first dorsal. Very short hypocercal tail. Rows of small spines on midline of back and tail, and on snout and between eyes. Color: no ocelli (eye-like spot) on body (Ref. 247, 31369).

A little-known angelshark found on the outer continental shelf. Possibly larger. Ovoviviparous (Ref. 50449).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

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

Main reference Upload your references | Bibliografia | Coordinatore : Compagno, Leonard J.V. | Collaboratori

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: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Traumatogenic

Human uses

Pesca: di nessun interesse

FAO - pesca: species profile; Publication: search | FishSource |

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
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Ecologia
Dieta
Prede
Consumo di cibo
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Nomi Comuni
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Metabolismo
Predatori
Ecotossicologia
Riproduzione
Maturità
Deposizione
Spawning aggregation
Fecundity
Uova
Egg development

Age/Size
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Length-weight
Length-length
Length-frequencies
Morfometria
Morfologia
Larve
Dinamica popolazioni larvali
Reclutamento
Abbondanza
BRUVS

Bibliografia
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Varietà
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Electrophoreses
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Nutrients
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Collaboratori
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Stamps, Coins Misc.
Suoni
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Area branchiale
Otoliths
Cervelli
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Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 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): 3.8 ±0.5 se; based on size and trophs of closest relatives

Resilienza (Ref. 120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (42 of 100).

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Random Species

Squatina formosa Shen & Ting, 1972