Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Scyliorhinidae
Etymology: Asymbolus: Greek, assymbolos, -os, -on = uselees, free, alone (Ref. 45335); occiduus: From its western distribution in the Australian seas. More on authors: Last, Gomon & Gledhill.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic; depth range 98 - 400 m (Ref. 36718), usually - m (Ref. ). Temperate; 0°C -
Eastern Indian Ocean: Southwestern Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 60.1 cm TL male/unsexed; (Ref. 36712); 53.0 cm TL (female)
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).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
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. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 13.1 - 16.4, mean 14.5 °C (based on 11 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00170 - 0.00646), b=3.15 (2.97 - 3.33), 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).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (50 of 100) .