Species that contain: Nannostomus and simplex [ 1 ] records

simplex, Nannostomus Eigenmann [C. H.] 1909:42 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1222] Lama Stop-off, Guyana. Holotype: FMNH 52773 [ex CM 1167]. Paratypes: CAS 62115 [ex IU 11692] (1). Type catalog: Henn 1928:56 [ref. 12305], Ibarra & Stewart 1987:59 [ref. 12367]. •Synonym of Nannostomus beckfordi Günther 1872 -- (Weitzman 1966:13 [ref. 12368], Weitzman & Weitzman in Reis et al. 2003:244 [ref. 27061], Marinho 2024:385 [ref. 40817]). Current status: Synonym of Nannostomus beckfordi Günther 1872. Lebiasinidae: Pyrrhulininae. Habitat: freshwater.