Original description as Heros istlanus:
- Jordan, David Starr & J.O. Snyder. 1899. "Notes on a collection of fishes from the rivers of Mexico, with description of twenty new species". Bulletin of the U.S. Fish Commission. 19:115-147 (ffm00041)
Conservation: Amphilophus istlanus is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2018).