hiraii, Cypselurus opisthopus Abe [T.] in Tomiyama & Abe 1953:962, Pl. 191 (figs. 523-524) [Figures and descriptions of the fishes of Japan v. 49; ref. 12631] Japan. Holotype: ZUMT 47765. Paratypes: (227) ZUMT (21 + 25). •Valid as Cypselurus hiraii Abe 1953 -- (Sheiko 1983:18 [ref. 37041], Yoshino in Masuda et al. 1984:80 [ref. 6441], Nakabo 2000:559 [ref. 25086], Kim et al. 2001:107 [ref. 25722], Nakabo 2002:559 [ref. 26001], Choi et al. 2003:221, 547 [ref. 26218], Kharin & Saveliev 2011:555 [ref. 32456], Parin et al. 2014:194 [ref. 33547], Kim et al. 2020:79 [ref. 39118], Sonoyama et al. 2020:40 [ref. 37637], Shakhovskoy & Parin 2024:6 [ref. 41246]). Current status: Valid as Cypselurus hiraii Abe 1953. Exocoetidae. Distribution: Northwestern Pacific: China, Korea, Japan and Russia. Habitat: marine.