biserratus, Silurus Swainson [W.] 1839:306 [The natural history and classification v. 2; ref. 4303] Ganges Basin, India. No types known. Based on Ham. pl. 37. f 46 -- which is Hamilton 1822:Pl. 37 (fig. 46) [ref. 2031]. If a true replacement name for singio Hamilton, then see singio for type specimens. •Synonym of Heteropneustes fossilis (Bloch 1794) -- (Menon 1999:262 [ref. 24904], Ferraris 2007:151 [ref. 29155], Hossain et al. 2013:259 [ref. 33105], Kottelat 2013:245 [ref. 32989], Jouladeh-Roudbar et al. 2020:215 [ref. 37983], Plamoottil 2021:95 [ref. 38923]). Current status: Synonym of Heteropneustes fossilis (Bloch 1794). Heteropneustidae. Habitat: freshwater.