guianensis, Belone Jardine [W.] in Schomburgk 1843:131, Pl. 1 [The natural history of fishes of Guiana.--Part II; ref. 3948] Paduiri River, Guyana. Holotype (unique): whereabouts unknown. •Questionably placed in Belone. •Valid as Potamorrhaphis guianensis (Jardine 1843) -- (Ovchynnyk 1967:40 [ref. 37559], Collette 1982:722 [ref. 5467], Ortega & Vari 1986:18 [ref. 9708], Keith et al. 2000:28 [ref. 24547], Lovejoy & de Araújo 2000:261 [ref. 31786], Lovejoy & Collette 2001:329 [ref. 25232], Lovejoy & Collette in Reis et al. 2003:586 [ref. 27061], Collette 2003:5 [ref. 27306], Menezes & Figueiredo in Menezes et al. 2003:67 [ref. 27192] with genus as Potamorraphis and author as Schomburgk, Sant'Anna et al. 2012:668 [ref. 32360], Barriga Salazar 2014:117 [ref. 35745], Sarmiento et al. 2014:33 [ref. 35004], Melo et al. 2016:135 [ref. 34701], DoNascimiento et al. 2017:100 [ref. 35633], Meza-Vargas et al. 2021:27 [ref. 39298], Koerber et al. 2022:78 [ref. 39235]). Current status: Valid as Potamorrhaphis guianensis (Jardine 1843). Belonidae. Distribution: South America: Amazon and Orinoco River basins and the Guianas: Brazil, Bolivia, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela. Habitat: freshwater.