The Doring River redfin, or Doring fiery redfin, is closely related to the fiery redfins of the Olifants River. They are Critically Endangered, and are known from just two locations. Their populations are severely fragmented.

They are range restricted, occurring only in the Olifants-Doring River System, and are known only from the Driehoeks and Breekkrans Rivers.

The habitat differs from population to population, varying from a rocky bedrock to more marshy environments.

The Doring River redfin is threatened by non-native invasive fish, in particular Smallmouth Bass (Micropterus dolomieu), Spotted Bass (Micropterus punctulatus) and Largemouth Bass (Micropterus salmoides). Other threats include habitat degradation (including invasive plants) and water abstraction (in particular for vineyard expansion).

Some conservation action is underway to protect the Doring River redfin. The Fynbos Fish Trust has put plans in place to rehabilitate stretches of the Breekkrans River, including plans to remove non-native fish, and to protect these areas from being reinvaded by non-native fish. CapeNature is also removing invasive alien trees from riparian areas.