Spot on ClownFish

[Gsxr1000rider]

I'm lost, came home from work and found my male clown with some spot on his head, looks like some kind of flesh disease. Anyone have any ides?
He still eating fine but is staying in the corner. I was thinking he got into a fight but I've nvr had or seen any aggression in my tank. I have 1 yellow tail damael, 6line and male n female clowns.
Any idea?

 

[celinesinlao]

He might got bit and got bacteria.... i lost a clownfish with that

 

[El Dude]

Hard to tell from the grainy photos. Looks like a secondary infection. Quarantine him and treat him with antibacterials NOW.

 

[Gsxr1000rider]

Will do, already have him n QT tank, just need to get the meds tomorrow. Thanks