leprurus, Sicyopus Sakai [H.] & Nakamura [M.] 1979:43, Fig. 2 [Japanese Journal of Ichthyology v. 26 (no. 1); ref. 8789] Arakawa River, about 500 meters above river mouth, Ishigaki Island, Ryukyu Islands, Okinawa Prefecture, Japan, 24°20'N, 124°15'E. Holotype: NSMT-P15979. Paratypes: NSMT-P20774 (1, c&s), 28174/1-2 (2), 28174/3 (1), 28619/1-2 (2), 28619/3-4 (2); YCM-P 3976/1-4 (4), 3976/5-6 (2), 4089/1-6 (6), 4089/7-10 (4). Type catalog: Shibata et al. 2011:20 [ref. 31469]. •Valid as Sicyopus leprurus Sakai & Nakamura 1979 -- (Akihito in Masuda et al. 1984:284 [ref. 6441], Kawanabe & Mizuno 1989:632 [ref. 25598], Maugé et al. 1992:228 [ref. 19910], Parenti & Maciolek 1993:859 [ref. 21279], Watson 1995:267 [ref. 21888], Watson 1999:97 [ref. 24143], Watson & Allen 1999:118 [ref. 24140], Nakabo 2000:1158 [ref. 25182], Larson & Murdy 2001:3603 [ref. 26293], Watson et al. 2001:42 [ref. 25349], Sakai et al. 2001:118 [ref. 25693], Nakabo 2002:1158 [ref. 26193], Keith & Marquet 2005:390 [ref. 28469] in subgenus Smilosicyopus, Yonezawa et al. 2010:258 [ref. 30902], Keith et al. 2010:303 [ref. 30933] in subgenus Smilosicyopus, Shibata et al. 2011:20 [ref. 31469], Koeda et al. 2016:95 [ref. 35333]). •Valid as Smilosicyopus leprurus (Sakai & Nakamura 1979) -- (Keith et al. 2011 [ref. 31023] based on status of Smilosicyopus, Keith & Taillebois 2014:72 [ref. 33422], Keith et al. 2015:166 [ref. 34328], Parenti 2021:424 [ref. 38603]). Current status: Valid as Smilosicyopus leprurus (Sakai & Nakamura 1979). Oxudercidae: Sicydiinae. Distribution: Eastern Indian Ocean, western Pacific: Ryukyu Islands (Japan) to Papua and northern Australia [amphidromous]. Habitat: freshwater, brackish, marine.