Elasmobranchii (hajar och rockor) (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); australis: Latin for southern, referring to distribution along coast of southern Australia. (See ETYFish).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
marina bottenlevande; djupintervall 15 - 256 m (Ref. 54902). Temperate; 18°S - 44°S, 113°E - 153°E (Ref. 54902)
Eastern Indian Ocean: southern Australia (including New South Wales).
Size / Vikt / Age
Maturity: Lm ? range ? - ? cm
Max length : 152 cm TL hane/ej könsbestämd; (Ref. 247)
Short description
Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt): 0; Mjukstrålar i ryggfenan (totalt): 0; Taggstrålar i analfenan 0; Mjukstrålar i analfenan: 0. Numerous dark spots on lower lobe of caudal fin (Ref. 31369). Pectoral fins greatly enlarged, with broad triangular lobe extending forward from their bases on either side of the gill slits; pelvic fins enlarged and wing-like; caudal very short, nearly symmetrical but not lunate, its lower lobe slightly longer than the upper (Ref. 31369).
A common but little-known angelshark found on the continental shelf and uppermost slope, on or near the bottom (Ref. 247, 75154). Occurs from close inshore to 130 m depth (Ref. 31369, 6871). Feeds mainly on small fishes and crustaceans (Ref. 6871). Ovoviviparous (Ref. 247). Flesh is highly esteemed (Ref. 6871).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
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)
Threat to humans
Traumatogenic
Human uses
Fiskeri: mindre kommeriell
Ytterligare information
Age/SizeTillväxtLength-weightLength-lengthLength-frequenciesMorfometriMorfologiLarverLarvdynamikRekryteringAbundansBRUVS
referenserVattenbrukVattenbruksprofilAvelslinjerGenetikElectrophoresesÄrftlighetSjukdomarBehandlingNutrientsMass conversion
MedarbetareBilderStamps, Coins Misc.LjudCiguateraHastighetSimsättGälytaOtolithsHjärnstorlekSyn
Verktyg
Special reports
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Estimates based on models
Preferred temperature (Ref.
123201): 14 - 20.4, mean 16 °C (based on 129 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).
Trofisk nivå (Ref.
69278): 4.0 ±0.66 se; based on food items.
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
