Percichthys melanops is a species of temperate perch endemic to Chile, where it occurs in pre-Andean streams.

[2] P. melanops was classified as an endangered species of Chile by Campos et al.

[3]: 110  It is listed as critically endangered by the International Union for Conservation of Nature due to a presumed range-wide population decline of 90% between 2011 and 2021.

[1] It is considered to be extirpated from the Aconcagua River basin.

Threats to the continued existence of this sensitive species include rapid human development of watersheds and river courses and droughts associated with climate change.