Cephalopoda | Octopoda
Environment: milieu / climate zone / depth range / distribution range
Benthic; depth range 100 - ? m. Subtropical; 49°N - 33°N, 129°E - 149°E (Ref. 275)
Northwest Atlantic: Japan.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 150 cm TL male/unsexed; (Ref. 275); max. published weight: 4.0 kg (Ref. 275)
Also caught by bottom longline. Females grow larger than males (Ref. 3722).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Cephalopoda are gonochoric. Male and female adults usually die shortly after spawning and brooding, respectively. Mating behavior: Males perform various displays to attract potential females for copulation. During copulation, male grasp the female and inserts the hectocotylus into the female's mantle cavity where fertilization usually occurs. Life cycle: Embryos hatch into planktonic stage and live for some time before they grow larger and take up a benthic existence as adults.
Roper, C.F.E., M.J. Sweeney and C.E. Nauen. 1984. (Ref. 275)
IUCN Red List Status (Ref. 124695)
CITES status (Ref. 108899)
Threat to humans
| FishSource |
Estimates of some properties based on models
Very high vulnerability (90 of 100)