oblongus, Crossocheilus Kuhl [H.] & van Hasselt [J. C.] in van Hasselt 1823:132 [Algemeene Konst- en Letter-bode voor het Jaar II Deel (no. 35); ref. 5963] Java, Indonesia. Lectotype: RMNH D1755 (dry). Probably not a type: RMNH 2640 (1). Type information: Roberts 1993:15 [ref. 21799]; but see Tan & Kottelat 2009:31 [ref. 30261] for lectotype and type information. Regarded as available, brief description with genus (see Kottelat 1987:371 [ref. 5962]). Also in van Hasselt 1824:376 [ref. 5964]; predates Labeo oblongus Valenciennes 1842. •Valid as Crossocheilus oblongus but dated to Valenciennes 1842 -- (Menon & Jacob 1996:62 [ref. 22482], Rainboth 1996:119 [ref. 22772], Su et al. 2000:215 [ref. 25281]). •Valid as Crossocheilus oblongus Kuhl & van Hasselt 1823 -- (Roberts 1989:32 [ref. 6439], Lim et al. 1990:41 [ref. 16753], Kottelat et al. 1993:34 [ref. 23448], Doi 1997:5 [ref. 22832], Ng & Tan 1999:353 [ref. 24159], Kottelat 2000:39 [ref. 25040], Kottelat 2001:43 [ref. 25780], Kottelat & Widjanarti 2005:149 [ref. 28284], Tan & Kottelat 2009:32 [ref. 30261], Kottelat 2013:90 [ref. 32989], Kottelat 2015:41 [ref. 33971], Ciccotto et al. 2017:282 [ref. 35402], Ng et al. 2019:522 [ref. 36606], Taki et al. 2021:176 [ref. 39830], Ahmad et al. 2023:59 [ref. 41243]). Current status: Valid as Crossocheilus oblongus Kuhl & van Hasselt 1823. Cyprinidae: Labeoninae. Distribution: Southeast Asia: Indonesia, Malaya (Malaysia), Mekong River basin, Cambodia, Laos and Thailand. IUCN (2019): Least Concern. Habitat: freshwater.