tucano, Tucanoichthys Géry [J.] & Römer [U.] 1997:66, Figs. 1, 5-6 [aqua, Journal of Ichthyology and Aquatic Biology v. 2 (no. 4); ref. 23712] Brook emptying into Igarape Yavuari River, tributary of River Uaupés, upper Negro River basin, 0°14'31"N, 68°03'48"W, Amazonas, Brazil. Holotype: MZUSP 51321. Paratypes: MZUSP 51322 (10), MHNG 2588.41 (3), MTD F 18469-71 [not 28202] (3), SMF 28202 (1), ZFMK 18585-89 (5). Type catalog: Zarske 2003:19 [ref. 27474], Herder et al. 2010:118 [ref. 31087]. •Valid as Tucanoichthys tucano Géry & Römer 1997 -- (Vari & Harold in Reis et al. 2003:158 [ref. 27061], Mattox & Conway 2021:647 [ref. 38770]). Current status: Valid as Tucanoichthys tucano Géry & Römer 1997. Acestrorhamphidae: Tyttobryconinae. Distribution: South America: Uaupés River in upper Negro River basin (Brazil). Habitat: freshwater.