typus, Ketengus Bleeker [P.] 1846:9 [Verhandelingen van het Bataviaasch Genootschap van Kunsten en Wetenschappen. v. 21 (art. 7); ref. 16879] Banjermassing, Java, Indonesia, in rivers. Syntypes: BMNH 1863.12.4.112 (1). Bleeker specimens: NMV 46234 (1). Type catalog: Ferraris 2007:45 [ref. 29155]. Also in Bleeker 1847:167 [ref. 314]. See van Oijen et al. 2009:212 [ref. 30423]. •Valid as Ketengus typus Bleeker 1846 -- (Jayaram & Dhanze 1979:49 [ref. 6800], Burgess 1989:169 [ref. 12860], Talwar & Jhingran 1991:709 [ref. 20764], Kottelat et al. 1993:81 [ref. 23448], Rainboth 1996:168 [ref. 22772], Kailola 1999:1877 [ref. 24732], Tan & Ng 1999:297 [ref. 24254], Kailola in Randall & Lim 2000:589 [ref. 25122], Kailola 2004:138 [ref. 28108], Jayaram 2006:331 [ref. 28762], Marceniuk & Menezes 2007:72 [ref. 29031], Ferraris 2007:45-46 [ref. 29155], Marceniuk et al. 2012:667 [ref. 32225], Kottelat 2013:249 [ref. 32989], Yoshida et al. 2013:45 [ref. 34464], Habib & Islam 2020:Supplementary table p. 8 [ref. 38321], Psomadakis et al. 2020:309 [ref. 37272], Taki et al. 2021:281 [ref. 39830], Marceniuk et al. 2023:35 [ref. 40422]). Current status: Valid as Ketengus typus Bleeker 1846. Ariidae: Ariinae. Distribution: Eastern Indian Ocean, western Pacific: east coast of India east to Indonesia, including Andaman Islands, and Vietnam. Habitat: freshwater, brackish, marine.