raja, Betta Tan [H. H.] & Ng [P. K. L.] 2005:123, Fig. 4 [Raffles Bulletin of Zoology Suppl. no. 13; ref. 28283] Sungai Ayer Merah, feeder stream to Danau Souak Padang, about 15 minutes by boat upstream, 1°36'45.7"S, 103°27'00.0"E, Sumatra. Holotype: MZB 9315. Paratypes: BMNH (5, missing); CMK uncat. (9); ZMA 121823 (5); ZRC 42499 (12), 42500 (20), 42501 (10), 42502 (14). Plus non-type material. •Valid as Betta raja Tan & Ng 2005 -- (Schindler & Schmidt 2008:43 [ref. 30459], Kottelat 2013:452 [ref. 32989]). Current status: Valid as Betta raja Tan & Ng 2005. Osphronemidae: Macropodusinae. Distribution: Sumatra. Habitat: freshwater.