heteromorpha, Rasbora Duncker [G.] 1904:182, Pl. 1 (fig. 5) [Mitteilungen aus dem Naturhistorischen (Zoologischen) Museum in Hamburg v. 21; ref. 5560] Negri Sembilan, Selangor, Malaysia. Lectotype: ZMH H378. Paralectotypes: BMNH 1905.5.6.2-3 [ex SSMKL] (2); ZMA 103218 (3); ZMH H379 (1), H380 (22), H381 (2); ZRC 2314 (6). Type catalog: Ladiges et al. 1958:159 [ref. 19181], Alfred 1963:166 [ref. 20555], Alfred 1970:71 [ref. 23931], Nijssen et al. 1982:33 [ref. 19236], Wilkens & Dohse 1993:403 [ref. 21161] as syntypes. Lectotype selected by Ladiges et al. 1958:159 [ref. 19181]. •Valid as Rasbora heteromorpha Duncker 1904 -- (Brittan 1954:187 [ref. 646], Kottelat et al. 1993:46 [ref. 23448], Doi 1997:12 [ref. 22832]). •Valid as Trigonostigma heteromorpha (Duncker 1904) -- (Kottelat & Witte 1999:54 [ref. 23898], Ng & Tan 1999:355 [ref. 24159], Liao et al. 2009:[4] [ref. 30521], Kottelat 2013:170 [ref. 32989], Petsut et al. 2014:471 [ref. 33645], Ng et al. 2019:527 [ref. 36606] as aff. heteromorpha, Tan 2020:427 [ref. 37544], Ahmad et al. 2023:89 [ref. 41243]). Current status: Valid as Trigonostigma heteromorpha (Duncker 1904). Danionidae: Rasborinae. Distribution: Malay Peninsula, northern Sumatra and Sumatran Islands (Batam, Bintan, Lingga, Bangka and Belitung), Malaysia and Indonesia. IUCN (2020): Least Concern. Habitat: freshwater.