I greatly doubt a sharper image is possible, these 3 are the best out of 200 tries. The fish is small.
The white spot is solid (not fuzzy), slightly longer than 1" in length, sticks out. It looks like a teenage pimple.... I don't think it can be a parasite, but it can be an inflamed bag of fluid...or a growth on the jaw bone..or even the bone itself (I suppose the bone is pretty close to the skin.)
The fish is getting anti-parasite, anti-protozoan, and anti-bacterial treatment, no effect seen so far. Yeah, forgot to mention: they fish behavior seems to be normal, it is eating and shoaling around.
As I said, I've never seen this kind of growth on any fish and not sure how to deal with it (or should I be trying to deal with it).
those are some nice patterns! look nothing like my striata!
LO, ty! --- being able to chose from a large number has some advantages....but this is a small fish, the pattern may be gone by the time it is the size of yours.