the base of the tail does look a little red. tomorrow (or tonight), do a water change and add some salt.
see if the redness disappears. sometimes, a water change can clear up minor stuff like this, as these are tough little fish.
how big are the white spots that you can see?
The white spots are very small and when he's in the shadows I can't see them, but when he swims under my light, I notice some white spots on top of him. Three or four of them.


