Blue tang not being able to swim.

[sscg]

So I quarantined about 10 fish, i used copper for 20 days and then i transferred them into a sterile tank, they had prazi resistant flukes so I lowered the salinity to 1.011. All the other fish but the royal gramma and blue tang are fine. eating and active. I have some pictures. the blue tang is so weak that I can easily catch it. still tries to swim.

 

[hdsoftail1065]

#reefsquad

 

[Mjrenz]

I have a blue tang that had prazi resistant flukes and was in very bad shape, I lowered the salinity to 1.009 and dosed methelyne blue into the QT for 10 days because of the extensive gill damage, is she breathing hard?