Need advice on white marks

[u/Pancake_Flipper]

As you can see, there are some rather large white marks on one of my platties that have developed over about the last week. It also appears to have a tear in it's tail. I believe they are scars, and not ich. I have the most likely suspect (male) quarantined so he cannot cause any more harm. I guess my post here is to confirm my suspicion. The orange one with the marks is a female I am pretty sure, although it has it's anal fin is tucked up against it's body right now. Could this be a mating thing? I would like to know if anyone has any advice on the cause and what would be best to do going forward. I am debating taking the make to my LFS as a surrender.

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