I have a male and female swallowtail in quarantine. Separate tank due to the size difference between the two. I noticed that after I treated them with PraziPro they both had a red spot show up on their right gill flap in the exact same spot. It's right where the little hook is for lack of a better word. I though maybe I did it with the net when I moved them into the tank. Should I be treating them with something else if it's just an irritation. Not the best picture



