mahakkamensis, Barbus Ahl [E.] 1922:34 [Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1922 (no. 1-2); ref. 15335] Mahakam River, eastern Kalimantan Prov, eastern Borneo. Syntypes: ZMB 20533 (5). Types mentioned: Paepke 1995:90 [ref. 21847]. •Valid as Barbodes mahakkamensis (Ahl 1922) -- (Doi 1997:3 [ref. 22832] as mahakkammensis). •Valid as Barbonymus mahakkamensis (Ahl 1922) -- (Kottelat 2013:81 [ref. 32989], Dahruddin et al. 2021:6 [ref. 38577]). Current status: Valid as Barbonymus mahakkamensis (Ahl 1922). Cyprinidae: Cyprininae. Distribution: Southeast Asia: southeastern Borneo (Kalimantan, Indonesia). Habitat: freshwater.