Help Diagnose Marks on Sunburst Anthia Fin

[AMP Tank]

We have a sunburst anthia in our quarantine tank and we noticed it has some marks on its pectoral fin. We suspect a fin fracture but would love a second opinion. Each of the marks are on the 'ribbing' of the fin. We are hesitant to treat with copper since anthia's can be so sensitive but obviously we want to protect our DT first and foremost. It has been in observation for a week with no significant sign of change to the marks, originally there were 3 clear spots two have faded slightly and one remains unchanged.

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[Montiman]

It is really hard to tell but I would lean towards lymphocystis. No big deal.