megacephalus, Chaenogobius Fowler [H. W.] 1905:516, Fig. 15 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 57; ref. 1370] Baram River basin, Sawawak state, Borneo, East Malaysia. Holotype (unique): ANSP 114891 [ex WIAP 13900]. Type catalog: Koumans 1940:134 [ref. 2676], Böhlke 1984:108 [ref. 13621]. •Valid as `Awaous' megacephalus (Fowler 1905) -- (Kottelat et al. 1993:142 [ref. 23448]). •Valid as Parawaous megacephalus (Fowler 1905) -- (Watson 1993 [ref. 20834], Kottelat & Lim 1996:247 [ref. 23210], Stevenson 2002:307 [ref. 26489], Parenti & Lim 2005:194 [ref. 28285], Kottelat 2013:418 [ref. 32989], Sulaiman et al. 2018:36 [ref. 35802], Parenti 2021:341 [ref. 38603]). Current status: Valid as Parawaous megacephalus (Fowler 1905). Oxudercidae: Gobionellinae. Distribution: Southeast Asia: Borneo (Malaysia). Habitat: freshwater.