My fish have a disease? ?

Hi everyone, I have two baby oscars that are new to my home and are in a ten gallon tank for the week, they both suddenly got some sort of disease and I think its fungus but im not sure. It looks like white tears in the skin or even as if he is (balding) like colorless spots or a faint white hue. Their mouths are making similar motions to gasping or biting but they are fed fine and have more than enough air. They are swimming up and down a lot more than normal and seem very uncomfortable. What could this be? P.s its not a white dot like mark its like cow spots of white tear looking things.