Thank you for your feedback.
Because I saw this white spot move once again, I figured it had to be a larger parasite like a fluke. So after much effort and failed traps, I finally caught the fish. I then used a new sharp razor blade and skimmed ever-so gently under this white thing being careful not to injure the fish. I got the white thing off, but it fell away and I was unable to find it. Fortunately, it fell to the floor and not back in the tank. I then stuck the fish in a quarantine tank with some copper treatment. If I did injure the fish, hopefully that will help medicate him back to health or remove any more of those things.
Thank you for your help,
Ken