What is this on my clown??

[Salty71Cuda]

So last night when I got home from work I saw this on my clown. This is the only spot on her. She was introduced to the tank about a week and a half ago. Eats great and seems very content. I was thinking ich or start of brook, but I am not sure. It's not fluffy , not stringy, and not slimey, but seems flat against her. Could it just be a scrape from a rock or another fish nipping at her? Sorry I couldn't a get closer pic.

 

[Allanira]

Looks life a fight wound or scar. It just popped up?

 

[rkelman]

Just keep an eye on it. Fish get marked sometimes.

 

[Salty71Cuda]

Thanks for the replies. I have to say I'm a bit relieved by what you've told me, just hope it's not some type of infection/disease. I've been watching it and also started adding vita chem to the food and tank.