Ich will look like small salt sprinkles on the fish. What exactly are you seeing?
How long have you had this fish? Do you quarantine, or do you have a quarantine tank to use? A picture would be helpful. Please read the FAQ section at the top of this forum, particularly about disease identification and see if your problem resembles anything shown.
Also post back with your water parameters; specifically nitrate, pH, temp and salinity. What are you feeding the fish? What else is in the tank?