HELP please, Kole tang got a nasty cut

[Kostas]

Ok so not quite sure how, but I noticed that my kole tang fish has a little cut near its caudal fin.

I was feeding him tonight and he was fine, leave the room for 5min come back and notice it and he has been acting very odd, almost trying to get my attention swimming back and forth a lot (also his color is off a bit)

Right away I notice this cut that looks like a flap of scale that won’t close or didn’t get pealed off kind of like a sliver???

But then on his other side he has a small cut on the same spot, almost it like he got slashed?

Now will this get infected?
Do these things heal fast?
Should I treat him?

I’d love any information or suggestions…


Left side


zoom in of left side


bad photo of the small cut on the right side