tapirus, Macrognathus Kottelat [M.] & Widjanarti [E.] 2005:167, Fig. 14 [Raffles Bulletin of Zoology Suppl. no. 13; ref. 28284] Waterfall at Trang, Thailand. Holotype: ANSP 68517. Paratypes: ANSP 68518 (1). Replacement name for Mastacembelus paucispinis Fowler 1939, preoccupied by Mastacembelus paucispinis Boulenger 1899. •Valid as Macrognathus tapirus Kottelat & Widjanarti 2005 -- (Britz 2010:55 [ref. 30857], Kottelat 2013:312 [ref. 32989], Ng et al. 2019:533 [ref. 36606], Ng & Tan 2020:176 [ref. 37671], Ahmad et al. 2023:120 [ref. 41243]). Current status: Valid as Macrognathus tapirus Kottelat & Widjanarti 2005. Mastacembelidae. Distribution: Southeast Asia: Thailand, Malaya (Malaysia), Sumatra (Indonesia), Borneo. IUCN (2020): Least Concern. Habitat: freshwater.