soniae, Cetopsidium Vari [R. P.] & Ferraris [C. J., Jr.] 2009:290, Fig. 1 [Neotropical Ichthyology v. 7 (no. 3); ref. 30494] Main channel of Manari River, Takutu River basin, along road between Lethem and Annai, near Lethem, 3°26.590'N, 59°44.578'W, Central Rupununi (Region 9), Guyana. Holotype: CSBD F1665 [ex. MHNG 2652.014]. Paratypes; MHNG 2652.014 (1). •Valid as Cetopsidium soniae Vari & Ferraris 2009 -- (Taphorn et al. 2022:46 [ref. 41297]). Current status: Valid as Cetopsidium soniae Vari & Ferraris 2009. Cetopsidae: Cetopsinae. Distribution: South America: Manari River, Takutu River basin, western rio Branco system, Amazon basin (Guyana) endemic. Habitat: freshwater.