leptorhynchus, Helicophagus Ng [H. H.] & Kottelat [M.] 2000:55, Figs. 1, 2a [Raffles Bulletin of Zoology v. 48 (no. 1); ref. 24933] Mun River at Bung Wai, about 7 kilometers west of Ubon Ratchathani, 15°12'30"N, 104°47'30"E, Ubon Ratchathani Province, Thailand. Holotype: USNM 288676. Paratypes: CAS 67226 (2), 94281 (1), 96864 (4); CMK 5094 (3), 13799 (2), 13829 (1), 12246 (1); UMMZ 214469 (8), 214471 (4), 214475 (1), 227503 (2), 232321 (2); USNM 288675 (7), 305704 (1), 316781 (1), 355238 (12); ZRC 43590-91 (4, 1). Type catalog: Ferraris 2007:324 [ref. 29155], Ng & Kim 2008:45 [ref. 29920]. •Valid as Helicophagus leptorhynchus Ng & Kottelat 2000 -- (Kottelat 2001:130 [ref. 25780], Gustiano 2003:47 [ref. 31337], Ferraris 2007:324 [ref. 29155], Kottelat 2013:253 [ref. 32989], Taki et al. 2021:260 [ref. 39830]). Current status: Valid as Helicophagus leptorhynchus Ng & Kottelat 2000. Pangasiidae. Distribution: Southeast Asia: Mekong and Chao Phraya River basins, Thailand, Laos, Cambodia and Vietnam. Habitat: freshwater.