wallacii, Crenicichla Regan [C. T.] 1905:163, Pl. 14 (fig. 2) [Proceedings of the Zoological Society of London 1905, v. 1 (pt 2) (art. 1) (for 7 Mar. 1905); ref. 12256] Essequibo River, Guyana. Holotype (unique): BMNH 1864.1.21.93. •Valid as Crenicichla wallacii Regan 1905 -- (Ploeg 1991:96 [ref. 20196], Kullander in Reis et al. 2003:632 [ref. 27061], Staeck 2003:137 [ref. 27488], Mattos et al. 2014:37 [ref. 33306], Ito & Rapp Py-Daniel 2015:477 [ref. 33978], see DoNascimiento et al. 2017:[26] [ref. 35679], Urbano-Bonilla et al. 2018:91 [ref. 35773] as "gr." wallacii, Taphorn et al. 2022:33 [ref. 41297]). •Valid as Wallaciia wallacii (Regan 1905) -- (Varella et al. 2023:5 [ref. 40273]). Current status: Valid as Wallaciia wallacii (Regan 1905). Cichlidae: Cichlinae. Distribution: South America: Essequibo River basin (Guyana and Colombia). Habitat: freshwater.