Hello. My rope fish (Noodle) manged to get very sick. I don't know what the disease exactly is but I'm treating it as if it were cotton mouth. It happened when I went on vacation for a week and a half. When I got home I realized something was very wrong so I measured all my parameters and they were all fairly stable, my nitrates were high (Cause I wasn't there to do my usual water changes) but I did one when I returned. I need help identifying the disease, curing it, or if hes too far gone, should I euthanize him. The disease has eaten away at his gill plate and his pectoral fin on his right side. It had not infected any of the other fish in the tank so I moved him to a 20 gallon high cause I wasn't taking my chances. (I know that is too small for him its just what I have at the moment. His usual tank is 60 gallons.)
Sorry the picture quality is bad.