Sick fish. Please help

[Reeferbob420]

My blue tang seems to have some dark spots. I dont know what it is. Ive been using reef safe medic but that didnt help. It doesnt look like ic . Can anyone help out? Thanks

 

[Big G]

Do you have any stinging corals in the tank? Has the tang been through a freshwater dip to check for flukes?

https://www.reef2reef.com/threads/video-how-to-do-a-freshwater-dip.286639/#post-3487082

 

[Reeferbob420]

Do you have any stinging corals in the tank? Has the tang been through a freshwater dip to check for flukes?

https://www.reef2reef.com/threads/video-how-to-do-a-freshwater-dip.286639/#post-3487082

I

Do you have any stinging corals in the tank? Has the tang been through a freshwater dip to check for flukes?

https://www.reef2reef.com/threads/video-how-to-do-a-freshwater-dip.286639/#post-3487082

I do have a hammer coral. Some of the tentacles seemed odd past few days. Do u think that could have done something to the fish?

 

[Big G]

Hypermelanization: it leaves black/brown marks where the coral has stung the fish.