percnopterygionus, Stiphodon Watson [R. E.] & Chen [I-S.] 1998:63, Figs. 5-7 [aqua, Journal of Ichthyology and Aquatic Biology v. 3 (no. 2); ref. 23584] Nakama River, Yaeyama-gun, Iriomote Island, Okinawa Prefecture, Japan. Holotype: NSMT P.49671. Paratypes: AMS I.23503-008 (2), I.29543-001 (4); BLIH 1980052 (18), 1986551 (11), 1987357 (13), 1989137-38 (1, 1), 1989915 (18), 1990185 (4), 1990670 (1), 1990672 (1), 1990709 (3); BPBM 37403 (1), uncat. (2); NMMBP 00344 (6), 00361-62 (7, 4); NTM S.12110-005 (10), S.12110-013 (6), S.12114-002 (12), S.12121-003 (5); SMF 19744 (1), 28038 (10); URM P4711 (1). Type catalog: Ho & Shao 2011:58 [ref. 31432]. •Valid as Stiphodon percnopterygionus Watson & Chen 1998 -- (Nakabo 2000:1160 [ref. 25182], Sasaki et al. 2001:3 [ref. 25228], Yonezawa & Iwata 2001:2 [ref. 25609], Sakai et al. 2001:119 [ref. 25693], Nakabo 2002:1160 [ref. 26193], Myers & Donaldson 2003:641 [ref. 27495], Yonezawa et al. 2010:259 [ref. 30902], Motomura et al. 2010:219 [ref. 31256], Ho & Shao 2011:58 [ref. 31432], Maeda et al. 2012:287 [ref. 31973], Maeda & Tan 2013:749 [ref. 32886], Maeda & Saeki 2013:215 [ref. 33022], Keith et al. 2015:223 [ref. 34328], Zhang et al. 2016:208 [ref. 34477], Koeda et al. 2016:95 [ref. 35333], Ito et al. 2021:12 [ref. 38938], Parenti 2021:428 [ref. 38603], Donaldson et al. 2023:[2] [ref. 40378], Jhuang et al. 2024:10 [ref. 41245]). Current status: Valid as Stiphodon percnopterygionus Watson & Chen 1998. Oxudercidae: Sicydiinae. Distribution: Western Pacific: Vietnam, Philippines, Taiwan and China east to Mariana Islands and Palau, north to Japan [amphidromous]. Habitat: freshwater, brackish, marine.