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Online Version, Updated 9 Dec 2025
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Eschmeyer's Catalog of Fishes
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undulatus, Macrognathus McClelland [J.] 1843:398, Pl. 22 (fig. 1) [Calcutta Journal of Natural History v. 4 (no. 4) (for 1844); ref. 2927] Ganga River drainage, Calcutta, India [Chusan Island, China]. Neotype: NRM 69592. Neotype ANSP 210057-5080 designated by Endruweit 2024:109 [ref. 41040] from Day River, Red River delta, Hoa Lu district, Ninh Binh Province, Vietnam, but invalid see Britz & Kottelat 2025:671 [ref. 42629]. Neotype designated by Britz & Kottelat 2025:671 [ref. 42629]. Objective synonym of Mastacembelus armatus (Lacepède 1800). •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]). •Synonym of Mastacembelus armatus (Lacepède 1800) -- (Zheng 1989:371 [ref. 21202], Menon 1999:303 [ref. 24904], Britz & Kottelat 2025:671 [ref. 42629]). Current status: Synonym of Mastacembelus armatus (Lacepède 1800). Mastacembelidae. Habitat: freshwater.

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