keramanus, Apterichtus Machida [Y.], Hashimoto [H.] & Yamakawa [T.] 1997:28, Figs. 2-5 [Ichthyological Research v. 44 (no. 1); ref. 22711] South of Kerama Islands, Okinawa Prefecture, southern Japan, about 26°10'N, 127°20'E, depth 25-50 meters. Holotype (unique): BSKU 82191. •Valid as Apterichtus keramanus Machida, Hashimoto & Yamakawa 1997 -- (Nakabo 2000:219 [ref. 25086], Nakabo 2002:219 [ref. 26001], McCosker & Randall 2005:6 [ref. 28054]). •Valid as Ichthyapus keramanus Machida, Hishimoto & Yamakawa 1997 -- (McCosker & Hibino 2015:76 [ref. 33725]), Current status: Valid as Ichthyapus keramanus (Machida, Hashimoto & Yamakawa 1997). Ophichthidae: Ophichthinae. Distribution: Japan, Fujian, China and Vanuatu. Habitat: marine.