[2] The Burchell's redfin (P. burchelli), the type species of its genus Pseudobarbus, is a very close relative.

This species is considered Endangered by the IUCN as it has declined much in recent decades; at least in the Boesmans River its numbers are still dropping.

Apart from overuse of the rivers' water, the main threats are the introduced rainbow trout (Oncorhynchus mykiss) and smallmouth bass (Micropterus dolomieu).

The higher reaches of the rivers are too cold for the bass to thrive; here, the trout are the bigger problem.

The impact of the African catfish (Clarias gariepinus), another non-native species, has not yet been assessed, as it has not been present for long.