My rainbow fish got stuck between driftwood and side of tank. Saw my severum either trying to help him or eat him. Probably the later... Anyway ran over and released him by lifting the driftwood. His eye is swollen and fogged up and his left side look messed up and he cant move his one fin. He's swimming ok. Anything can do for him or should just leave the poor guy alone and see if he recovers ok?