Melanocetus johnsonii Günther, 1864 .

Blackdevil. To 15.4 cm (6.1 in) SL (Theodore Pietsch), 18 cm (7.1 in) TL (Pietsch 1986). A record of 64 cm (25.2 in) SL (Kong and Meléndez 1991) is an error. Circumglobal (Pietsch in Smith and Heemstra 1986); western Pacific Ocean north to Japan (Nakabo in Nakabo 2002) and Russian North Pacific (Orlov and Tokranov 2019); as far north as off British Columbia (48°41’N, 126°30’W) (Weil et al. 2015) and south to northern Chile (31°14’S) (Kong and Meléndez 1991). Depth: about 100–3,603 m (328–11,818 ft) (min.: Bertelsen in Whitehead et al. 1986; max.: Porteiro et al. 2017). A record of 4,500 m (14,760 ft) (Froese and Pauly 2019) is an error (Theodore Pietsch).