I have a freshwater 5 inch tea-cup which was healthy and happy. I found him today with 2 large wounds on his back (obv. attacked by someone in the tank) The wounds are circular about a 1/4 inch in diameter and appear like the skin was just pulled back. I have put him in a small tank increase the salt slightly added some anti-bacterial meds. Anything else I should be doing? I've had them almost 3 months with no issues till today.