Black spots on my fish

[damarech]

I noticed the other day that one of my female red zebras had a few black spot on her body. Today I see that all of female red zebras have them now.The spot are randomly scattered over their bodies and varied in size, from a speck to about 1.5 mm.
Should I be concerned or wait and see if they go away.
Any insight on this would be appreciated.

[Melody]

If its spreading it could be Black Spot 'Disease' (Diplopstomiasis), which is actually a type of fluke larvae.  There are various treatments on store shelves.  Hope it clears up for you soon!