Blue/Green Chromis with mystery fungus/parasite

[roberteb]

I have something wrong with my Blue/Green Chromis. I've had three die already in the last week and one of them had this fungus on above the eye which got bigger and bigger until the fish expired. Now I've had 2 more expire without signs of this problem and two more with it. Any idea what it could be and what would be the appropriate action? As you can see by the video one of them has something wring with it's jaw and the other one has this "fungus" above it's eye. It only has affected the chromis.
http://www.youtube.com/watch?v=YjaArxRAqsg

 

[beth]

It looks like lymphocyctis.
https://forums.saltwaterfish.com/t/127010/diseased-fish-pictures#post_915073