Red Marks on Green Chromis

[Frogger]

Originally Posted by straightrazorguy

Uronema.

I concur. Your tank will always have this parasite even if you do not have fish. Best option now is to keep your fish healthy, happy and low stressed. Healthy fish in a good environment are resistant. Not sure if you can effectively treat the fish.

Work on improving the biodiversity in your tank. Competition is the best defense.