maassi, Vaillantella Weber [M.] & de Beaufort [L. F.] 1912:532 [11], Pl. 12 (fig. 2) [Durch Zentral-Sumatra. Von Alfred Maass... Berlin. v. 2; ref. 14895] Gunung Sahilan on Kiri River, Sumatra, Indonesia. Holotype (unique): ZMA 100993. Type catalog: Nijssen et al. 1982:37 [ref. 19236]. On p. 11 of separate. •Valid as Vaillantella maassi Weber & de Beaufort 1912 -- (Roberts 1989:108 [ref. 6439] dated 1916, Kottelat et al. 1993:57 [ref. 23448], Kottelat 1994:430 [ref. 21216], Doi 1997:18 [ref. 22832], Ng & Tan 1999:356 [ref. 24159], Nalbant 2002:315 [ref. 27361], Kottelat 2012:21 [ref. 32367], Kottelat 2013:176 [ref. 32989], Ahmad et al. 2023:36 [ref. 41243]). Current status: Valid as Vaillantella maassi Weber & de Beaufort 1912. Vaillantellidae. Distribution: Southeast Asia: Thailand, Malaya (Malaysia), Sumatra and Kalimantan (Indonesia). IUCN (2020): Least Concern. Habitat: freshwater.