Original description as Chaetobranchopsis australe:
- Eigenmann, Carl H & W.L. McAtee & D. P. Ward. 1907. "On further collections of fishes from Paraguay". The Annals of the Carnegie Museum. vol. 4: pp. 110-157 (crc00287)
Conservation: Chaetobranchopsis australis is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.