balunga, Betta Herre [A. W. C. T.] 1940:44 [Bulletin of the Raffles Museum No. 16; ref. 11006] Tiny brook, tributary to the Balung River, 45 miles from Tawau, Borneo, Malaysia. Holotype (unique): CAS-SU 33203. •Tentatively valid -- (Witte & Schmidt 1992:327 [ref. 14256]). •Questionably a synonym of Betta akarensis Regan 1910 -- (Kottelat et al. 1993:161 [ref. 23448]). •Valid as Betta balunga Herre 1940 -- (Vierke 1986:85 [ref. 36452], Vierke 1988:120 [ref. 36453], Kottelat 1995:63 [ref. 21728], Tan & Kottelat 1998:43 [ref. 23543], Tan & Lim 2004:114 [ref. 27716], Tan & Ng 2005:69 [ref. 28354], Tan & Ng 2004:273 [ref. 28058], Kottelat 2013:449 [ref. 32989], Kamal et al. 2020:192 [ref. 37675]). Current status: Valid as Betta balunga Herre 1940. Osphronemidae: Macropodusinae. Distribution: Borneo, Malaysia. Habitat: freshwater.