Parotocinclus cabessadecuia[1] is a species of catfish in the family Loricariidae. It is a freshwater species native to South America, where it occurs in the Parnaíba River basin of Brazil, alongside its congeners Parotocinclus haroldoi and Parotocinclus cearensis. The species reaches at least 3.32 cm (1.3 inches) SL. It was described in 2017 by T. P. Ramos, S. M. Lima, and R. T. Ramos.[2] FishBase does not list this species.