What You Need To Know:
* Small black smudges (larger than “Black Ich” turbellarians) typically found on clownfish.
* This is more of a condition than a disease. The dark spots are reactions from coming into contact with an anemone or stinging coral.
* Most of the time it self-corrects, in rare cases it can be fatal for the fish. It all depends upon whether eventually the host “accepts” the clown(s).