White spot on his tail, just can't see clear enough.
Is it fluffy, solid, interesting it shows up this late....
Since it just materialized, I would probable do nothing but watch carefully for a few days, sometimes these type of things just fall off, like flukes, If it grows or another comes up then I would be suspecting diease of some type.
The best part is he eats fine, that's of course critical.
Them my thoughts....