Is this red cheek normal? I've only had this fish for 2 weeks and it's in my quarantine tank. All water parameters are good and it is swims and acts and eats normal.
I bought 3 angels 3 or 4 years ago with the same blushing appearance. Still have 1 of them, the other 2 got rehomed, but they all lost the blushing appearance after a year or so.
Yours looks almost identical to the 3 i bought.
One of the lines that was used to create the Koi Angelfish was a blushing line so this is very normal for any Angel in the Koi line. As an adult, this blushing may disappear as the coloring on the gill plate increases. You can see a picture of my adult Blushing Angel here: https://www.aquariumadvice.com/forums/members/41382-albums14898-picture73117.html
I think you are right. Thanks for your help!