guyanae, Mesonauta Schindler [I.] 1998:5, Figs. 1b, 2-3 [Zeitschrift für Fischkunde v. 5 (no. 1); ref. 23480] Rockstone, Essequibo River, Guyana. Holotype: ZMB 32779. Paratypes: ZMB 32333 (2), 32780 (1); plus additional non-type material. Type catalog: Paepke & Schindler 2013:270 [ref. 32895]. •Valid as Mesonauta guyanae Schindler 1998 -- (Keith et al. 2000:206 [ref. 24547], Kullander in Reis et al. 2003:638 [ref. 27061], Schindler & Ottoni 2016:87 [ref. 34465], Melo et al. 2016:135 [ref. 34701], Taphorn et al. 2022:33 [ref. 41297]). Current status: Valid as Mesonauta guyanae Schindler 1998. Cichlidae: Cichlinae. Distribution: South America: Amazon River and Essequibo River basins (Brazil and Guyana). Habitat: freshwater.