Oscar and Myxosoma?
I have searched the archives and have found very little information about this. From what I have read, I suspect that my Oscar may have this “whirling disease”. He has stopped eating for the last week or so. I normally do weekly water changes of about 15%. Because of his symptoms, I have done three water changes during the last week totaling probably about 60% I have been using Melafix for the last few days, but have seen no changes. He is breathing heavy, mouth opening and closing. The other fish in the tank (2 large tinfoil barbs and a Synodontis cat) remain normal. During the day when I’m not home, I don’t suspect that he is doing the whirling thing because there is no water on the floor. At night when the lights are on, he will do the quick, one full turn around action, often splashing water out of the tank. This goes on every few minutes while I’m watching. I have done some research on the web and found that infected fish will often do the whirl when they are startled or fed (conn