Hello all, I really need some help. Yesterday I noticed my goldfish had cloudy eyes and its mouth stays open. I have been watching it very closely and this morning still no change. I have not done anything different to the tank. I looked very closely at it and there is no rock in his mouth. It tries to eat sucks it in but pushes the food right back out. There is a slight bump on the underneath part of its mouth that wasn't there before--can't see anything in mouth that caused the bump. My son got his 2 goldfish for his 6th birthday and we have had them now for 1 year and 7 months. We are attached to them- didn't realize how much till spotty got sick. If anyone can please tell me what is wrong with our fish and how to cure him---you will make us all very happy. Thanks in advance.