prima, Betta Kottelat [M.] 1994:298, Figs. 1-2 [Ichthyological Exploration of Freshwaters v. 5 (no. 4); ref. 21572] Creek at about kilometer 1 on road to Nam Tok Phliu, after leaving Chantaburi-Trat highway, 12°32'N, 102°11'E, Chantaburi, Thailand. Holotype: ZRC [ex CMK 10798]. Paratypes: CMK 9738 (1), 10665 (5), 10691 (6), 10714 (2), 10723 (1); KUMF uncat. (14); MHNG 2158.52 (6); NIFI uncat. (2); ZRC 38250-51 (6, 5). •Valid as Betta prima Kottelat 1994 -- (Tan & Kottelat 1998:46 [ref. 23543], Kottelat 2001:160 [ref. 25780], Schindler & Schmidt 2004:3 [ref. 28030], Tan & Ng 2005:45 [ref. 28354], Schindler & Schmidt 2006:56 [ref. 28865], Schindler & Schmidt 2008:44 [ref. 30459], Kottelat 2013:452 [ref. 32989], Taki et al. 2021:410 [ref. 39830]). Current status: Valid as Betta prima Kottelat 1994. Osphronemidae: Macropodusinae. Distribution: Southeast Asia: Mekong River basin and coastal streams in Thailand and Cambodia, Thailand, Cambodia, Laos and Vietnam. Habitat: freshwater.