mestomorgmatos, Caenotropus Vari [R. P.], Castro [R. M. C.] & Raredon [S. J.] 1995:14, Figs. 9-10 [Smithsonian Contributions to Zoology No. 577; ref. 21817] Río Iguapo, tributary of Río Orinoco, Río Orinoco basin, Estado Amazonas, Venezuela, 3°09'N, 65°28'W. Holotype: MBUCV-V-21750. Paratypes: AMNH 74679 (2); ANSP 162764 (7); BMNH 1991.11.15.1-3 (3); MBUCV-V-21751 (7); MCNG 12104 (1), 25319 (1); MZUSP 29359 (1), 43285 (3); USNM 270236 (1), 322557 (6). Type catalog: Oyakawa 1996:454 [ref. 23140], Provenzano et al. 1998:5 [ref. 24196]. •Valid as Caenotropus mestomorgmatos Vari, Castro & Raredon 1995 -- (Vari & Ortega 1997:78 [ref. 22865] as mestomorgmatus, Vari & Raredon in Reis et al. 2003:85 [ref. 27061], Scharcansky & Lucena 2007:59 [ref. 29251], DoNascimiento et al. 2017:41 [ref. 35633]). Current status: Valid as Caenotropus mestomorgmatos Vari, Castro & Raredon 1995. Chilodontidae. Distribution: Amazon and Orinoco river basins: Brazil, Colombia and Venezuela. Habitat: freshwater.