Elasmobranchii (sharks and rays) > Squaliformes
(Sleeper and dogfish sharks) > Somniosidae
Etymology: Scymnodalatias: Greek, skymnos, -ou = little lion + Greek, dalos, -ou = burning piece of wood (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; oceanodromous (Ref. 51243); depth range 150 - 510 m (Ref. 6871), usually - m (Ref. ). Deep-water; 0°C - ; 42°S - 50°S
Eastern Indian Ocean: southern Australia. Southwest Pacific: New Zealand.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 111 cm TL male/unsexed; (Ref. 26346)
Morphology | Morphometrics
(total): 0. Grey and white, mottled with large brown or black spots; tail mostly white with black tips (Ref. 26346). Dorsal fins small, pectoral fins angular, and an asymmetric caudal fin with a dark-tipped upper lobe (Ref. 6871).
Oceanic (Ref. 6871). A rare species known only from a few specimens taken by tuna longliners and trawlers (Ref. 6871). Ovoviviparous (Ref. 205), with at least 59 young in a litter (Ref. 26346).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Probably ovoviviparous (Ref. 6871), with at least 59 young (Ref. 26346). Distinct pairing with embrace (Ref. 205).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 7.2 - 11.8, mean 9.2 °C (based on 20 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00189 - 0.01107), b=3.14 (2.93 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.1 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Fec=59).
Vulnerability (Ref. 59153
): High vulnerability (59 of 100) .