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); legnota: Greek for “with a colored border,” referring to the dark anterior edges of its pectoral and pelvic fins (See ETYFish).
More on authors: Last & White.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic. Tropical; 6°S - 8°S
Indian Ocean: Indonesia. Occurs off southern Indonesia. Palabuhanratu in West Java, Cilacap in Central Java, Kedonganan in Bali, and Tanjung Luar in Lombok. Depth information not known.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 134 cm TL male/unsexed; (Ref. 74939); 47.1 cm TL (female)
Short description
Identification keys | Morphology | Morphometrics
Body strongly depressed anteriorly, firm; trunk strongly depressed, almost ray-like, deepest
over abdomen; not tapering abruptly at pelvic-fin insertion, tail strongly depressed, even at origin of caudal fin. Abdomen moderately elongate. Head broad, extended laterally, strongly depressed; oval in cross-section; subcircular, with truncate anterior margin when viewed from above. Mouth large, terminal. Dermal denticles covering entire dorsal surface of body; less dense, absent on posterior borders of fins (Ref. 74939).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Last, P.R. and W.T. White, 2008. Three new angel sharks (Chondrichthyes:Squatinidae) from the Indo-Australian region. Zootaxa 1734:1-26. (Ref. 74939)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00295 - 0.01551), 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 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (80 of 100).