haugiangensis, Oryzias Roberts [T. R.] 1998:222, Fig. 2F [Ichthyological Research v. 45 (no. 3); ref. 23471] Bassac River (Hau Giang) at Cân Tho, Vietnam. Holotype: UMMZ 233088. Paratypes: UMMZ 218674 (248, 14 c&s), 224693 (18), 227299 (2). •Valid as Oryzias haugiangensis Roberts 1998 -- (Parenti 1999:2150 [ref. 24784], Parenti in Randall & Lim 2000:600 [ref. 25122], Freyhof et al. 2000:96 [ref. 25184], Parenti 2008:563 [ref. 29902], Kottelat 2013:288 [ref. 32989], Taki et al. 2021:327 [ref. 39830]). Current status: Valid as Oryzias haugiangensis Roberts 1998. Adrianichthyidae: Oryziinae. Distribution: Southeast Asia: lower Mekong River basin and rivers in northern Vietnam, Thailand, Cambodia and Vietnam. Habitat: freshwater.