Original description as Haplochromis machadoi:
ZooBank:C44DF655-B72B-4654-8EB2-8EE1EF898DA3.
- Poll, Max. 1967. "Contribution à la faune ichthyologique de l'Angola". Publ. Cult. Cia. Diamantes Angola. 1-381 (crc01460)
Conservation: Orthochromis machadoi is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2007).