xanthurus, Sicydium Bleeker [P.] 1853:271 [Natuurkundig Tijdschrift voor Nederlandsch Indië v. 4 (no. 2); ref. 12580] Western Sumatra, Indonesia. Holotype (unique): whereabouts unknown. •Probably a synonym of Sicyopterus macrostetholepis (Bleeker 1853) -- (Kottelat et al. 1993:153 [ref. 23448], Kottelat 2013:428 [ref. 32989], Keith et al. 2015:112 [ref. 34328]). Current status: Synonym of Sicyopterus macrostetholepis (Bleeker 1853). Oxudercidae: Sicydiinae. Habitat: freshwater, brackish, marine.