Well for starters it was bought a flowerhorn. I'm not one to go to a store buy an Oscar that colored differently and assume its wild caught. Second in the first pictures you can see flower spots that Flowerhorn/Trimac/Lyonsi sport. When they fade you will see lighter spots where they were unlike Midas/Red Devil/etc where the lighter spots aren't usually there. There is also red/pink on the chest which you don't see in Midas/Red Devil after they fade. Was purchased as a Flowerhorn, don't see a reason to say otherwise.
Just curious don't ZZ's typically have pearlings? Do they disappear with fading or is it not a requirement to be classified as a ZZ. Good call on the faded flower line I didn't even pick up on it.
ZZ can be pearly but not all are. ZZ is essentially the most basic strain of Flowerhorn, the vanilla breed if you will.
Base color is throwing me off bit as that says Midevil and not Flowerhorn as fader Flowerhorn don't typically sport that shade of orange. Sticking with Flowerhorn for now but I could see this possibly being the result of FH x Midevil but theres no way to prove it so its merely speculation.