Vet inte om detta kan vara något att kolla närmare på,upptäckte det när jag höll på att kolla upp clowner på RK: The final external parasite to be concerned with is known as Amyloodinium ocellatum. Unfortunately, this parasite is considerably destructive and treatment is a crapshoot at best. In most situations, the hobbyist will not realize something is amiss until their fish start dieing. At this point, treatment is probably too late. In the rare situations that this parasite is caught in time, the most effective treatment is copper followed by a day of lowered salinity. The lowered salinity does not kill the parasite, but it will cause it to fall off of its host, thus relieving some of the stress caused by the parasite. http://reefkeeping.com/issues/2003-10/hcs3/index.htm