arcana, Cetopsis Vari [R. P.], Ferraris [C. J., Jr.] & de Pinna [M. C. C.] 2005:153, Fig. 13 [Neotropical Ichthyology v. 3 (no. 2); ref. 28270] Boca da Lapa de Bezerra, 13°32'43"S, 46°22'35"W, Parque Estadual de Terra Ronca, São Domingos, Goiás State, Brazil. Holotype: MZUSP 58637. Paratypes: MCP 16002 (1); MHNG 2593.99 (1); MNRJ 12772 (1), 16942 (1); MZUSP 55965 (3, 1 c&s); USNM 372765 (1). Plus non-type specimens. Type catalog: Ferraris 2007:131 [ref. 29155]. •Valid as Cetopsis arcana Vari, Ferraris & de Pinna 2005 -- (de Pinna et al. 2007:803 [ref. 29247], Ferraris 2007:131 [ref. 29155], Abrahão & de Pinna 2018:117 [ref. 35957]). Current status: Valid as Cetopsis arcana Vari, Ferraris & de Pinna 2005. Cetopsidae: Cetopsinae. Distribution: Middle and upper Tocantins River basin, Brazil. Habitat: freshwater.