ambulator, Marukawichthys Sakamoto [K.] 1931:54, Fig. 1 [Journal of the Imperial Fisheries Institute v. 26 (no. 2); ref. 3859] Off Humi-gun, Toyama Bay, Japan, depth 70-300 meters. Holotype (unique): whereabouts unknown. •Valid as Marukawichthys ambulator Sakamoto 1931 -- (Watanabe 1960:5 [ref. 11959], Yabe in Masuda et al. 1984:323 [ref. 6441], Lindberg & Krasyukova 1987:253 [ref. 15964], Shinohara et al. 1996:175 [ref. 26605], Nakabo 2000:626 [ref. 25086], Shinohara et al. 2001:319 [ref. 25995], Nakabo 2002:626 [ref. 26001], Shinohara et al. 2011:43 [ref. 31715], Shinohara et al. 2014:248 [ref. 33330], Motomura et al. 2015:19 [ref. 34709]). Current status: Valid as Marukawichthys ambulator Sakamoto 1931. Rhamphocottidae. Distribution: Western North Pacific. Habitat: marine.