is this really fungus

[woodster]

help, please. I have attached a pic of my cory. Initial treatment was with melafix and pimafix after a week went to lfs said to treat with antifungus so after a week of antifungus treatment, he still looks like this. Should I continue with anti-fungus treatment for another week? all water perameters are within a good range and temp is a steady 23.5. Have done a 25% water change today. Only has the white fluffy stuff on one side of the body. eating and swimming fine has just lost his colour.

[TropicalFishForums]