What am I looking at on this Damsel?

[HELLCO]

Never seen this before this Damsel has something on it face, none of my other fish have it. Craziest thing I’ve ever seen. Thoughts?

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[vetteguy53081]

Never seen this before this Damsel has something on it face, none of my other fish have it. Craziest thing I’ve ever seen. Thoughts?

This fish got into a tangle with a bristleworm likely and will take several days for the bristles to work themselves out