Found on the outer continental and insular shelves and uppermost slopes, presumably on or near sandy-mud bottom . Ovoviviparous .
Dorsal spines (total): 2; Anal spines: 0. : elongated.
Behavioural data for Japanese spurdog is currently being reviewed.
Distinct pairing with embrace .
Marine; pelagic-oceanic; depth range 150 - 300 m . Deep-water; 41°N - 5°N East China Sea, including the Republic of Korea, the Philippines, and the Arafura Sea (Ref.
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