they willl be fine, they just figuring out who will be female, don't worry about it, It should last, the most a few days, then it won't be as rought
The mouth structure difference is often due to OVERBREEDING, its fairly common, and upturned mouths don't inhibit ur clown from feeding. My False Perc has an upturned mouth, and my Black Perc doesn't.
Due to Overbreeding.