I have a 5" female flowerhorn in a 55 hex. Params are good. Temp is at 83 deg. The tank has been up and running 3 months now. I have noticed a few spots where the scales have a slightly yellow tint and are protruding slightly away from the body. Tonight I looked and it looks like there maybe something behind the affected scales. I did one treatment of "copper free" 6 days ago under the assumption this is a parasite infection.The treatment doesn't appear to be helping. Any ideas what I am dealing with?

