how to fix it? Can it be from him hitting his head?I want to say its a slime coat issue
Could be. Have u heard the fish jumping? Tankmates? Would increase ur water changes and a little salt 1 tsp per g.how to fix it? Can it be from him hitting his head?
Ammonia and nitrite are at 0Check your water parameters and let us know
He is a 120 gallon with 2 parrots and i do 50% weekly water changesI would start with daily water changes and see if it gets better or worse.
How big is your tank and what are the tank mates? What's your usual maintenance routine?

Thanks i will do water changes every 4 days since i am already doing it weeklyMy aro has had a similar whitish patch on it's head since around a week. Less severe than on the picture and its been slowly shrinking on it's own. No medication. Weekly water changes. I also around that time got a new uv bulb for my uv sterilizer but I doubt it has anything to do with it.
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Right near the right nostril. It was around 1/4 of the head big a week ago. I thought it was either a hit or he brushed against something but since it is going away I leave it alone.