zosterophorum, Sicydium Bleeker [P.] 1856:296 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 12 (no. 2); ref. 355] Boleling, northern Bali, Indonesia. Holotype (unique): RMNH 4462. Combined with a masculine genus, the compound adjective should be zosterophorus. •Valid as Sicyopus zosterophorus (Bleeker 1856) -- (Akihito in Masuda et al. 1984:284 [ref. 6441], Kawanabe & Mizuno 1989:632 [ref. 25598], Maugé et al. 1992:228 [ref. 19910], Kottelat et al. 1993:153 [ref. 23448], Watson 1995:87 [ref. 21675], Allen 1991:197 [ref. 21090], Watson 1999:97 [ref. 24143], Watson & Allen 1999:114 [ref. 24140], Nakabo 2000:1159 [ref. 25182], Watson et al. 2001:42 [ref. 25349], Larson & Murdy 2001:3603 [ref. 26293], Sakai et al. 2001:119 [ref. 25693], Nakabo 2002:1159 [ref. 26193], Keith et al. 2002:188 [ref. 26363], Watson & Kottelat 2006:121 [ref. 28766], Yonezawa et al. 2010:258 [ref. 30902], Keith et al. 2011:2726 [ref. 31651] as zosterophorum, Kottelat 2013:429 [ref. 32989], Keith et al. 2015:155 [ref. 34328], Miesen et al. 2016:95 [ref. 34492], Zhang et al. 2016:207 [ref. 34477] as zosterophorum, Keith et al. 2019:166 [ref. 36794], Keith et al. 2021:154 [ref. 38257], Parenti 2021:423 [ref. 38603], Praveenraj et al. 2022:[9] [ref. 39577], Donaldson et al. 2023:[2] [ref. 40378], Jamandre 2023:170 [ref. 40455], Okamura et al. 2023:6 [ref. 40166], Furuhashi et al. 2024:17 [ref. 41415]). Current status: Valid as Sicyopus zosterophorus (Bleeker 1856). Oxudercidae: Sicydiinae. Distribution: Western Pacific; Vietnam and Indonesia east to Philippines, Solomon Islands, Vanuatu and Fiji, north to Kochi Prefecture (Japan), south to New Caledonia [amphidromous]. Habitat: freshwater, brackish, marine.