singio, Silurus Hamilton [F.] 1822:147, 374, Pl. 37 (fig. 46) [An account of the fishes found in the river Ganges; ref. 2031] Ganges River, India. Syntypes: BMNH 1858.8.15.79 (1), 1858.8.15.89-90 (2), ?1858.8.15.133 (1). Type catalog: Ferraris 2007:151 [ref. 29155] with no types known. Hamilton's original illustration reproduced by Britz 2019:Pl. 82 [ref. 37532]. •Synonym of Heteropneustes fossilis (Bloch 1794) -- (Menon 1999:262 [ref. 24904], Ataur Rahman 2003:189 [ref. 31338], Jayaram 2006:313 [ref. 28762], Ferraris 2007:151 [ref. 29155], Kottelat 2013:245 [ref. 32989], Plamoottil 2021:95 [ref. 38923]). •Synonym of Heteropneustes microps (Günther 1864) -- (Hossain et al. 2013:259 [ref. 33105], Jouladeh-Roudbar et al. 2020:215 [ref. 37983]). Current status: Synonym of Heteropneustes fossilis (Bloch 1794). Heteropneustidae. Habitat: freshwater.