Chaetostoma dupouii is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the Tuy River basin in Venezuela. The species reaches 7.9cm (03.1inches) SL.[1] It was described in 1945 by Agustín Fernández-Yépez, a Venezuelan ichthyologist, with its type locality listed as the Encantado River, a tributary of the Río Grande, which itself is a tributary of the Tuy River.[2]
Chaetostoma dupouii occasionally appears in the aquarium trade, where it is sometimes referred to as Dupou's rubbernose.[3]