Species that contain: Mastacembelus and undulatus [ 3 ] records

liemphuensis, Mastacembelus Vu [T. H. N.], Nguyen [V. H.] & Nguyen [T. H. T.] 2019:145, Figs. 2, 4 [Proceedings of the first national conference on Ichthyology; ref. 37811] Liêm Phú community, Van Bàn district, Lào Cai Province, northern Vietnam, about 22°02'N, 104°19'E. Holotype: RIA1 000022. Paratypes: RIA1 001081 (1), 001082 (1). •Valid as Mastacembelus liemphuensis Vu, Nguyen & Nguyen 2019. •Synonym of Mastacembelus undulatus (McClelland 1843) -- (Endruweit 2024:109 [ref. 41040]). Current status: Synonym of Mastacembelus undulatus (McClelland 1843). Mastacembelidae. Habitat: freshwater.

thacbaensis, Mastacembelus Nguyen [H. D.], Nguyen [V. H.] & Ngo [S. V.] in Nguyen 2006:633, Fig. 4 [Freshwater fishes of Vietnam v. 3; ref. 29809] Lower Lo River, Yen Bai Province, Vietnam [Thac Ba Lake, Yen Binh district, Yen Bai Province, Vietnam, about 21°52'N, 104°56'E]. Neotype: ZMB 35101. Original types: RIA1 (lost) [ex NCNTTS I Inst., Bac Ninh.], (5, lost). Neotype designated by Endruweit 2024:109 [ref. 41040]. •Questionably a synonym of Mastacembelus undulatus (McClelland 1843) -- (Kottelat 2013:313 [ref. 32989]). •Valid as Mastacembelus thacbaensis Nguyen, Nguyen & Ngo 2006 -- (Vu et al. 2019:150 [ref. 37811]). •Synonym of Mastacembelus undulatus (McClelland 1843) -- (Endruweit 2024:109 [ref. 41040]). Current status: Synonym of Mastacembelus undulatus (McClelland 1843). Mastacembelidae. Habitat: freshwater.

undulatus, Macrognathus McClelland [J.] 1843:398, Pl. 22 (fig. 1) [Calcutta Journal of Natural History v. 4 (no. 4) (for 1844); ref. 2927] Day River, Red River delta, Hoa Lu district, Ninh Binh Province, Vietnam [Chusan Island, China]. Neotype: ANSP 210057-5080. Neotype designated by Endruweit 2024:109 [ref. 41040]. •Synonym of Mastacembelus armatus (Lacepède 1800) -- (Zheng 1989:371 [ref. 21202], Menon 1999:303 [ref. 24904]). •See Kottelat 2001:63 [ref. 25482]. •Valid as Mastacembelus undulatus (McClelland 1843) -- (Britz 2007:257 [ref. 29343], Kottelat 2013:313 [ref. 32989], Endruweit 2024:109 [ref. 41040]). Current status: Valid as Mastacembelus undulatus (McClelland 1843). Mastacembelidae. Distribution: Southeast Asia: Red River and Pearl River basins, southern China and Vietnam. Habitat: freshwater.