I got a red ceibal and convict and they were in a tank together and they are only 2" convict and 1" red ceibal and while I was at work the next day after I got them the convict beat him up and now he won't swim, I have him divided off and I am melafixing him, he only has a red mark by his gill on one side and he is breathing hard and his stomach looks really deflated. What can I do to save him, he has been alive like this for over a day now