elongatus, Macrones Günther [A.] 1864:77 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Singapore [probably China]. Holotype (unique): BMNH 1855.9.19.1099. Type catalog: Ferraris 2007:88 [ref. 29155]. •Valid as Hemibagrus elongatus (Günther 1864) -- (Mai 1978:250 [ref. 13511], Mo 1991:132 [ref. 19952], Ng & Ng 1995:136 [ref. 21730]). •Tentatively a synonym of Hemibagrus guttatus (Lacepède 1803) -- (Kottelat et al. 1998:569 [ref. 23920]). •Valid as Mystus elongatus (Günther 1864) -- (Ni & Wu in Kuang et al. 1986:174 [ref. 26639], Burgess 1989:69 [ref. 12860], Jayaram & Sanyal 2003:55 [ref. 26894]). •Synonym of Hemibagrus guttatus (Lacepède 1803) -- (Ferraris 2007:88 [ref. 29155], Ng & Kottelat 2013:208 [ref. 32495], Kottelat 2013:259 [ref. 32989]). •Not treated in Zhang et al. 2016:182 [ref. 34477]. Current status: Synonym of Hemibagrus guttatus (Lacepède 1803). Bagridae. Habitat: freshwater.