pijpersi, Cetopsorhamdia Hoedeman [J. J.] 1961:132, Fig. 2 [Bulletin of Aquatic Biology v. 2 (no. 23); ref. 11969] Sipaliwini River, Suriname, 20 kilometers from frontier with Brazil. Holotype (unique): ZMA 102230. Type catalog: Nijssen et al. 1982:41 [ref. 19236], Ferraris 2007:186 [ref. 29155] •Valid as Imparfinis pijpersi (Hoedeman 1961) -- (Bockmann & Guazzelli in Reis et al. 2003:414 [ref. 27061], Ferraris 2007:186 [ref. 29155], Ortega-Lara et al. 2011:778 [ref. 31716], Borstein et al. 2022:18 [ref. 39507]). Current status: Valid as Imparfinis pijpersi (Hoedeman 1961). Heptapteridae: Heptapterinae. Distribution: South America: Corantijn River basin (Suriname). Habitat: freshwater.