Looks like it's possibly ich. Could also just be a scrape he gave himself. Doubt it's fading as most faders will peel before 4in. Would you mind taking some water tests and post the tank parameters along with temp? Looks like he's stressed about something, he's atleast got his stress lines showing from what I can see in the pic.
ph 7.6 ammonia 0 nitrite 1.0 nitrate 0(im kinda confused why nitrates read 0,i did do a large water change before so maybe thats it) temp 80 degrees f.like i said fish behaves normal doesnt act sick at all or lethargic as if he had ich or velvet,cant find any pictures on the net that looks like it..scabs would be the best description i can give as in they only appear white cause of the bright light in the tank.otherwise would prolly be same color as the scales and different sizes to the dots and only on the sides of the face none on the body or fins
Well from the sounds of it he probably just got hurt somehow, either by getting into a fight or by smacking into some decor. But since you said the fish seems flighty I would imagine it probably got scared and ran into some decor and scraped itself up a bit. Personally I'd whatch it for a week and see if it gets better over time while also treating with some API general cure to help prevent/cure any infection. As long as he keeps eating regularly and acting normal he should heal up over time, might leave a lil scar but shouldn't be anything to worry about. When I had my FH (Jr.) He scraped up his kok a few times and eventually gave himself a scar, but it seems to be very similar to what yours had happen. Hope this helps ya out and best of luck to ya.
yea hes really skittish,,hes getting a bit better around me but still hides really quick if i show up.eats pretty good.is is quite active
