This is my pet puffer. He and another fish in this fish only system have strange white volcano looking protrussions sticking out of their skin. This has been ongoing for several months. Things that I have tried; hyposalinity at 1.009, CP and Metro. At first I thought some form of fluke or anchor worm, but they would not have survived weeks of Hypo. It seens that they are poking through his skin layer almost like a bone protruding between 1/16 to 1/8th of an inch. The other fish affected is a Desjardini Sailfin Tang. The Emporer Angel, French Angel and Yellow Tang seem unaffected