oligactis, Acentrogobius Bleeker [P.] 1875:132 [Archives néerlandaises des sciences exactes et naturelles v. 10; ref. 12599] Singapore. Syntypes: RMNH 4493 (3). •Questionably the same as Drombus triangularis (Weber 1909) -- (Larson et al. 2008:148 [ref. 29532], Kottelat 2013:406 [ref. 32989]). •Valid as Drombus oligactis (Bleeker 1875) -- (Shibukawa in Kimura et al. 2015:79 [ref. 34319], Parenti 2021:134 [ref. 38603]). Current status: Valid as Drombus oligactis (Bleeker 1875). Gobiidae: Gobiinae. Distribution: Eastern Indian Ocean: Malaysia and Singapore. Habitat: brackish, marine.