Every month we get this question. I agree with the others in that there's a 99.9% chance this fish isn't a pure form of either species. As for simply looking at it and saying it's a Red Devil (or Midas for that matter), is absolute hogwash. Even looking at a juvenile specimen of a pure Labiatus or Citrinellus would be extremely difficult to label with certainty. The conundrum with the modern day "midevil" is that each individual grows up displaying different traits. Some look more like a Midas, some look more like a RD and some are an odd mixture of both. Main point, unless it was sold/given to you from a genuine source, it's a mongrel in the fish hobby.