Species that contain: Nannostomus and trifasciatus [ 4 ] records

amazona, Cyprinodon Eigenmann [C. H.] 1894:627 [Annals of the New York Academy of Sciences v. 7 (art. 5); ref. 1214] Lower Amazonas, Brazil. Syntypes: (18) BMNH 1894.5.18.52 (1), CAS 29351 (5). •Questionably a synonym of Nannostomus trifasciatus Steindachner 1876 or the same as Nannostomus marginatus Eigenmann 1909 -- (Weitzman 1966:27 [ref. 12368], Marinho 2024:389 [ref. 40817]). Current status: Uncertain as Nannostomus trifasciatus Steindachner 1876. Lebiasinidae: Pyrrhulininae. Habitat: freshwater.

erythrurus, Poecilobrycon Eigenmann [C. H.] 1909:44 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Rockstone sand-bank, Guyana. Holotype: FMNH 52774 [ex CM 1168]. Paratypes: (14, CM and IU) BMNH 1911.10.31.383 (1); CAS 62316-18 [ex IU 11693-95] (2, 1, 1); FMNH 7340 (1), 52775 (1), 52787-88 (1, 1), 52974 (2); MCZ 29936 (1); CAS-SU 21918 (1). Type catalog: Henn 1928:56 [ref. 12305], Böhlke 1953:26 [ref. 12291], Ibarra & Stewart 1987:68 [ref. 12367]. Also as a synonym of Nannostomus trifasciatus in Marinho 2024:388 [ref. 40817]. •Synonym of Nannostomus trifasciatus Steindachner 1876 -- (Weitzman 1966:27 [ref. 12368], Paepke & Arendt 2001:152 [ref. 26010], Weitzman & Weitzman in Reis et al. 2003:246 [ref. 27061]). •Valid as Nannostomus erythrurus (Eigenmann 1909) -- (Zarske 2013:125 [ref. 32773], Marinho 2024:386 [ref. 40817]). Current status: Valid as Nannostomus erythrurus (Eigenmann 1909). Lebiasinidae: Pyrrhulininae. Distribution: South America: Guyana. Habitat: freshwater.

trifasciatus, Nannostomus Steindachner [F.] 1876:123 [75], Pl. 9 (fig. 2) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Amazon River near mouth of Rio Negro and Tabatinga, Brazil. Syntypes: NMW 56522-23 (3, 5). On p. 75 of separate. •Valid as Nannostomus trifasciatus Steindachner 1876 -- (Weitzman 1966:27 [ref. 12368], Weitzman & Cobb 1975:27 [ref. 7134], Ortega & Vari 1986:10 [ref. 9708], Paepke & Arendt 2001:152 [ref. 26010], Weitzman & Weitzman in Reis et al. 2003:246 [ref. 27061], Zarske 2013:127 [ref. 32773], Sarmiento et al. 2014:81, 186 [ref. 35004], DoNascimiento et al. 2017:45 [ref. 35633], Careaga et al. 2020:76 [ref. 37774], Meza-Vargas et al. 2021:15 [ref. 39298], Marinho 2024:388 [ref. 40817]). Current status: Valid as Nannostomus trifasciatus Steindachner 1876. Lebiasinidae: Pyrrhulininae. Distribution: South America: Amazon, Orinoco and Essequibo River basins, Bolivia, Brazil, Colombia, Guyana and Peru. Habitat: freshwater.

vittatus, Poecilobrycon Ahl [E.] 1934:124 [Zoologischer Anzeiger v. 106 (no. 5/6); ref. 17303] Pará, Brazil. Syntypes: ZMB 20791 (5). Types mentioned: Paepke 1995:91 [ref. 21847]. Mentioned earlier by Ahl 1933:184 [ref. 35902], but with no differential diagnosis. •Synonym of Nannostomus trifasciatus Steindachner 1876 -- (Weitzman 1966:27 [ref. 12368], Paepke & Arendt 2001:152 [ref. 26010], Weitzman & Weitzman in Reis et al. 2003:246 [ref. 27061], Marinho 2024:388 [ref. 40817]). •Possibly valid -- (Zarske 2013:127 [ref. 32773]). Current status: Synonym of Nannostomus trifasciatus Steindachner 1876. Lebiasinidae: Pyrrhulininae. Habitat: freshwater.