Clarias pseudonieuhofii is a species of clariid catfish from Borneo.

It has been currently described from the upper basin of the Kapuas River in West Kalimantan, in a geographic area bordering Sentarum Lake.

It can be found in bodies of water in the Kapuas Hulu Regency, including in Lake Sentarum National Park.

This species is distinguishable from most other Southeast Asian forest Clarias species (except C. nieuhofii) by the combination of the following characters:[2] Clarias pseudonieuhofii differs from C. nieuhofii by a shorter anal fin, a longer pelvic fin, and a shorter occipital process, all in somewhat slight measurements.

In living specimens, the skin has been noted to be of dark brown to black, with deeper colors on the dorsal surface of the body and the paired fins.