brown bandings on all fins

My aro recently developed brown bandings on all its fins - they bandings are quite even and are even found on the ventral and pectoral fins - wonder if it is a desease or parasite attack?
Aro eats and behaves normally....
PLease see the attached video and any advice will be appreciated.
Cheers.
Ron

YouTube Video

[YH3340]

are you put many salt in yr aro tank?

Originally Posted by YH3340

are you put many salt in yr aro tank?

No, never put salt before...the bandings started from the ventral, then spreaded to all other fins within about 3 to 4 weeks....

[Aroboy II]

Cant see much over the video clips Ron, perhaps you can snap a few pics here.
Btw, water parameters readings?

Originally Posted by Aroboy II

Cant see much over the video clips Ron, perhaps you can snap a few pics here.
Btw, water parameters readings?

still not very clear but here are the pict....don't have means to take water readings....water changed regularly - every 1 or 2 weeks, 522 with sump tank, only 1 xb with 1 sd 1 ee and 1 barb, so bio load shud not be too high, i think.
thanks,

[Aroboy II]

Looks fine unless it rots which I hope not. Appetite is good will indicate the aro is fine so dun worry too much. Try to do some water testings and see where your water stands. Meantime, good water management will be good.