amphilophus is one of those genus that has been fragmented a million times, and will continue to be, due to so many slightly different locales and similar but "different enough" fish. "Barred Midas" or any type of "midas" is considered to be citrinellum, so technically, breeding different citrinellum to each other does not produce a hybrid fish. However, that is not to say that all citrinellum are 100% genetically similar, and in the future there will probably be more amphilophus species described.
A similar situation would be dovii- for example, Nicaraguan and costa rican dovii are noticeably different, yet are both dovii. If you breed a costa rican to a Nicaraguan dovii, you will probably get a fish with some characteristics of both locales- the fish is a pure dovii, not a hybrid, but no longer a pure costa-rican or Nicaraguan dovii.