Patch of black spots on tang

[Malta101]

hi i have a yellow mask tang and it is in my QT tank.It have a small patch of her body covered in black spots. it has been in QT for a week and a half and in seachem cupramine treatment for about a week and gave it a 5 minute freshwater dip yesterday. Can someone identify the problem and suggest treatment please.

 

[Malta101]

The yellow mask tang is eating well and very active.

 

[Jberge]

Welcome to R2R! Beautiful fish! There are plenty of awesome people here who can help. #reefsquad

 

[BestMomEver]

Welcome to the reef! That tang is pretty! Did she have those marks when you got her? It almost looks like that’s her actual color... like a birth mark of sorts. @4FordFamily @Humblefish @ngoodermuth

 

[Malta101]

no they appeared about 4 days later i got it from lfs. i had a similar issue when i lost a gold rimmed tang. the symptoms where a like.

 

[Malta101]

they are like black ich but they are just on that patch

 

[BestMomEver]

no they appeared about 4 days later i got it from lfs. i had a similar issue when i lost a gold rimmed tang. the symptoms where a like.

If that’s the case, then unfortunately, I’m no good. We’ve summoned good folks. They’ll come along.

 

[Malta101]

thanks for your help

 

[ngoodermuth]

It could be bacterial in nature... Do you have antibiotics on hand?

When using copper, the “trifecta” of kanaplex + metroplex + furan-2 is usually my go to for bacterial issues.

Once the copper treatment is complete (you can transfer to a new sterile QT after 14 days) then a course of NFG would be my choice if it is still lingering. If it don’t have NFG, Sulfaplex (or Triple Sulfa) + Furan-2 is another option. These antibiotics are pretty strong, so you’ll likely need Prime to keep ammonia in check... so definitely have to wait until the fish is out of copper.

 

[saltyhog]

Agree with @ngoodermuth!

I would add that it could be an aberrant stress coloration. Tangs are famous for doing that. People have paid outlandish sums for uniquely colored tangs only to have them convert to normal coloration as they settle in.

 

[Malta101]

will paraguard work for bacterial infection? because that what i have on hand at the moment.it may be stress as well because the patch is not getting bigger or darker. copper treatment will be ready soon so i can remove the copper and dose paragaurd if it works