Possibly ich??????

[tmm161]

Only hippo has thos . One single white dot. Not sure if I am worrying to much. Still super active as all the fish are

 

[Idech]

It starts with one. Are you running a UV ?

 

[tmm161]

Nope. As I posted this. It now is no longer on him.

 

[Sharkbait19]

Could you point out where the dot is? I see something on the black bar but can’t really make anything out.
How recent was the newest addition? Was it quarantined?
It’s not rare for fish to get sand stuck on them.