I recently purchase 2 Swallowtails angels for my tank. Both the male and female have been in QT for about 10 days now. I left to go out of town Tuesday night for work and everyone was eating and looking good. Came home today ( wife feeds the fish when I am gone but not to good at observation) to feed them and spotted what looked like damage to the female head. Not sure it this is some kind of bruise or an infection.
Can someone help me out. Hopefully since it just happened I can take care of it before it gets worst.
Here are a few pictures I took today.
Can someone help me out. Hopefully since it just happened I can take care of it before it gets worst.
Here are a few pictures I took today.

