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Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Asymbolus: Etymology not explained, possibly a-, Latin privative, i.e., without; sym-, from syn (Gr.), together or joined; bolus (L.), lump or morsel, proposed as a subgenus of Scyliorhinus (Scyliorhinidae) distinguished in part by labial fold of upper lip not hanging over lower-jaw symphysis of A. analis and A. vincenti (See ETYFish); occiduus: Latin for western (of the setting sun), referring to its western distribution in Australian seas (See ETYFish).
More on authors: Last, Gomon & Gledhill.

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

Marine; pelagic-oceanic; depth range 98 - 400 m (Ref. 36718). Temperate

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Eastern Indian Ocean: Southwestern Australia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 60.1 cm TL male/unsexed; (Ref. 36712); 53.0 cm TL (female)

Short description Identification keys | Morphology | Morphometrics

Medium-sized body pale, yellowish green with 8 or 9 pale brownish saddles on the upper surface and sides; covered with sharply defined, brownish black spots; prominent dark spot usually beneath each eye and a single spot on dorsal midline between each saddle; trunk narrow; head relatively short. Caudal fin long, peduncle deep; dorsal and pelvic fins low; anal-fin base longer than pelvic-anal space. Teeth ridged, 5 main cusps. Monospondylous centra 37-41. Posterior margin of first dorsal fin 0.61-0.77 times its base (Ref. 36718).

Oviparous (Ref. 50449).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).

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Last, P.R., M.F. Gomon and D.C. Gledhill, 1999. Australian spotted catsharks of the genus Asymbolus (Carcharhiniformes: Scyliorhinidae). Part 2: Descriptions of three new, dark-spotted species. p. 19-35. In P.R. Last (ed.). Australian catsharks of the genus Asymbolus (Carcharhiniformes: Scyliorhinidae). (Ref. 36718)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 07 May 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: bycatch

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 13.1 - 16.4, mean 14.5 °C (based on 11 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00355 (0.00175 - 0.00721), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-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 (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (44 of 100).

Price category (Ref. 80766): Low.

Asymbolus occiduus Last, Gomon & Gledhill, 1999