Small white spots on Severum

[neutrino]

...As I recall, with the first case of ich I'd had for many years-- I had a 9 day power outage after a major storm a few years ago and was changing water with river water to keep my fish alive-- my sevs had it the worst, other fish had milder cases to almost none.

 

[neutrino]

Can't tell from the photo. As I say, I have some experience with ich, but not other white spot diseases. In the case I had a few years ago, I didn't see behavior change much, except in the sevs and only after they were heavily covered-- I ended up using copper meds to cure it and everyone fully recovered.