Original description as Chromis facetus:
- Jenyns, L.. 1842. "The zoology of the voyage of H. M. S. Beagle, under the command of Captain Fitzroy, R. N., during the years 1832 to 1836". London: Smith, Elder, and Co. Issued in 4 parts. Fish, Voyage Beagle. i-xvi + pp. 1-172 (crc00311)
- Chromys oblonga Castelnau, 1855, with type locality at Rio Tocantins, Goiás, Brazil. Determiner: Říčan et al., 2008
- Heros jenynsii Steindachner, 1869, with type locality at Montevideo, Uruguay. Determiner: Steindachner, 1874
Conservation: Australoheros facetus is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.