espei, Poecilobrycon Meinken [H.] 1956:31, Fig. [Die Aquarien- und Terrarienzeitschrift (DATZ) v. 9 (no. 2); ref. 12211] South America [possibly Kamarang River drainage, Mazaruni River basin, Guyana]. Lectotype: CAS-SU 51593. Paralectotypes: CAS-SU 51592 (2); ZMH H1188 (2). Type catalog: Wilkens 1977:156 [ref. 22013]. Lectotype selected by Weitzman 1966:11 [ref. 12368]. •Valid as Nannostomus espei (Meinken 1956) -- (Weitzman 1966:9 [ref. 12368], Weitzman & Cobb 1975:7 [ref. 7134], Géry & Zarske 2002:36 [ref. 26555], Weitzman & Weitzman in Reis et al. 2003:244 [ref. 27061], DoNascimiento et al. 2017:[6] [ref. 35679], Taphorn et al. 2022:26 [ref. 41297], Marinho 2024:386 [ref. 40817]). Current status: Valid as Nannostomus espei (Meinken 1956). Lebiasinidae: Pyrrhulininae. Distribution: South America: Mazaruni River basin (Guyana) endemic. Habitat: freshwater.