Pseudobagrus brevianalis is a species of bagrid catfish endemic to Taiwan.

[1][2][3] First collected from Sun Moon Lake (the type locality), it is found in central and northern Taiwan, west of the Central Mountain Range.

[3][2] Based on the lack of morphological and genetic differences, it has been proposed that Pseudobagrus taiwanensis is a junior synonym of Pseudobagrus brevianalis,[3] but this has not been followed by online databases.

[4][5] Pseudobagrus brevianalis grows to 20 cm (7.9 in).

It has not been evaluated by IUCN but is classified as "vulnerable" in the 2012 Redlist of Fresh Water Fishes of Taiwan.