falx, Betta Tan [H. H.] & Kottelat [M.] 1998:557 [Revue Suisse de Zoologie v. 105 (no. 3); ref. 23781] Sungai Alai, kilometer 19.5 on Muara Bungo-Muara Tebo Road, about 1°28'42.6"S, 102°18'31.7"E, Jambi Province, central Sumatra. Holotype: MZB 9308. Paratypes: CMK 11119 (44); MHNG 2593.95 (5); MZB 9307 (4); RMNH 33087 (5); ZMA 121673 (6); ZRC 38254 (3) 38571 (44), 40974 (20), 42496 (10); plus nontype material. •Valid as Betta falx Tan & Kottelat 1998 -- (Schindler & Schmidt 2004:3 [ref. 28030], Tan & Ng 2005:45 [ref. 28354], Tan & Ng 2005:118 [ref. 28283], Kottelat 2013:450 [ref. 32989]). Current status: Valid as Betta falx Tan & Kottelat 1998. Osphronemidae: Macropodusinae. Distribution: Indonesia. Habitat: freshwater.