Hi there, new on the forum and quite new to tropical fish keeping. Bought a giant puffer a week ago and he was fine for a couple of days. He liked his prawns and was swimming along fine when he seemed to have lots of white spots all over him and one of his eyes is real glazed over and white, he almost cant see out of it. Have so far treated the tank with white spot as some of the other fish have white spots. He now just lies on the bottom and looks very un happy. He does however swim around the tank now and again. He has lost his appetite completely. Can anyone help? please!