Pinirampus pirinampu is a species of catfish (order Siluriformes) of the family Pimelodidae.

[8] These catfish feed on benthic animals; they are nonspecialist feeders preying upon fish such as Iheringichthys labrosus and piranha Serrasalmus sp..[8][11] In the Amazon basin, these fish are preyed upon by Zungaro zungaro.

After spawning, the adults and juveniles drift downstream, reaching flooded areas or reservoirs used as foraging, growth sites and shelter against predation.

[12] Brazil's Mato Grosso do Sul state government has adopted the criterion of 60 cm (24 in) TL minimum capture size for P.

[12] P. pirinampu is an attractive fish for both leisure and professional sport fishers due to its tasteful meat and its fighting behavior.