geisleri, Microschemobrycon Géry [J.] 1973:93, Figs. 7-8 [Studies on the Neotropical Fauna v. 8; ref. 1596] Igarapé, about 35 kilometers northwest from Obidos, Rio Curuçamba drainage, lower Amazon basin, Brazil. Holotype: MHNG 2229.09 [ex Géry coll. 0672]. Paratypes: (3). Type catalog: Weber 1998:8 [ref. 32707]. •Valid as Microschemobrycon geisleri Géry 1973 -- (Malabarba in Reis et al. 2003:145 [ref. 27061], Barriga Salazar 2014:107 [ref. 35745] as cf. geisleri, Sarmiento et al. 2014:185 [ref. 35004], DoNascimiento et al. 2017:53 [ref. 35633], Ohara et al. 2019:334 [ref. 36615], Meza-Vargas et al. 2021:19 [ref. 39298], Marinho 2024:219 [ref. 40817]). Current status: Valid as Microschemobrycon geisleri Géry 1973. Characidae: Characinae. Distribution: South America: Madeira, Negro, Tapajós and lower Amazon River basins (Brazil, ?Ecuador, Colombia, Peru and Bolivia). Habitat: freshwater.