Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Pentanchidae
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); vincenti: Etymology not explained, probably named for Gulf St Vincent, where Kangaroo Island (southern coast of Australia), type locality, is situated. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 27 - 650 m (Ref. 75154). Temperate; 33°S - 42°S
Eastern Indian Ocean: Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 61.0 cm TL male/unsexed; (Ref. 244)
Widespread on the continental shelf and slope edge (Ref. 244). Oviparous, with a single egg-case to each oviduct at a time (Ref. 244).
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. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 126983)
Fisheries: of no interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 11.8 - 15.8, mean 14.2 °C (based on 22 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00173 - 0.00727), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 4.5 ±0.80 se; based on food items.
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).