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); caillieti: In honor of American marine-fish ecologist Gregor Cailliet (b. 1943₎, Moss Marine Landing Laboratories, California State University, for his contributions to ichthyology, especially chondrichthyan age and growth (See ETYFish).
Eponymy: Dr Gregor Michel Cailliet (d: 1943) is an ichthyologist and marine biologist who was Professor at Moss Landing Marine Laboratories (1972–2009) and Professor Emeritus since then. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 363 - 385 m (Ref. 86399). Deep-water
Western Pacific: Philippines.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 32.8 cm TL (female)
Short description
Identification keys | Morphology | Morphometrics
Vertebrae: 137. This squatinid is distinguished from other western North Pacific squatinids based on the following characters: unfringed barbels with rod-like tips; upper lip arch semi-oval in shape, upper lip arch height (1.2), its width (4.3); with large papillae on the inside posterior margin of the spiracles; a greater interspiracle space (8.9) than interorbital space (8.6); no midback row of thorny tubercles; no large prominent ocelli on pectoral fins; pelvic fin tips reaching first dorsal origin, pelvic fin base short (12.9), pelvic inner margin very short (8.6) and short pelvic posterior margin (16.3); pelvic girdle width (27.9) more than 1.4 times greater than head length (18.7); dorsal fins angular, greater interdorsal space (7.4) than dorsal caudal space (6.4), with subdorsal saddles; caudal fin lobed, very short upper postventral caudal margin (2.5) (Ref. 86399).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Walsh, J.H., D.A. Ebert and L.J.V. Compagno, 2011. Squatina caillieti sp. nov., a new species of angel shark (Chondrichthyes: Squatiniformes: Squatinidae) from the Philippine Islands. Zootaxa 2759:49-59. (Ref. 86399)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Fisheries: bycatch
Tools
Special reports
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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): 3.7 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (Live-bearing deep-water species with low fecundity (RF)).
Fishing Vulnerability (Ref.
59153): Low vulnerability (23 of 100).
