White mark on Royal Gramma mouth

[Jedi Knghit]

Not the best pictures, but I noticed a white mark on the mouth of a royal gramma I have in QT. The fish went through 14 days in Copper Power at2. and then transferred to a new sterile QT. I haven't seen any other spots or disease symptoms, but I am not sure what to make of it. Any suggestions? I'll try to get better pictures, but it tends to hide when I get to close to the tank.

 

[Jedi Knghit]

Any thoughts?

 

[Jedi Knghit]

A couple updated pics. This is after 14 day in copper power at 2.0 and after the first dose of GC. Second dose of GC is tomorrow. What is this while mark and should I be treating with something else?

#reefsquad

 

[Jedi Knghit]

Oops, forgot one of the pics

 

[saltyhog]

Maybe an injury? It's not real impressive. If he's eating well and acting normal I would just keep an eye on it and continue your present QT plan. Hopefully some of the disease experts will chime in.