Dark patches on powder brown tang

[linjuncheung]

Hi everyone, first time posting here but I have this powder brown for 3 weeks already in my QT. After a big water change lately, I found him all of a sudden covered with dark patches all over his body. Also his behaviour changed to be quite drastic as he either swam around pretty quickly or just hid in a corner.

I’ve been dosing cupramine for a couple weeks to treat his ich. Now the ich did not return but this thing happened. Are these bacterial infections? What product should I use to treat it? I only have Paraguard but can run out and buy other medications.

 

[Crabs McJones]

Can you provide some pictures to help with diagnosis?

 

[linjuncheung]

Here are the pictures.

 

[Crabs McJones]

Here are the pictures.

And what are the parameters of the qt tank? Could be stress marks.

 

[Big G]

Welcome to R2R!
Can you tell us about its behavior? Is it eating? Is the breathing normal or rapid or labored? Is it twitching or flashing?
@4FordFamily
@melypr1985

 

[4FordFamily]

That does look to be bacterial. Because you have one week left, you might dose kanaplex, metroplex, and furan 2 in quarantine in a couple days if it doesn’t worsen much then do large water change after 30 days and redose antibiotics.

 

[linjuncheung]

Ammonia 0.05ppm according to the seachem dial ammonia alert. PH 8.0. Copper 0.5ppm. Salinity 1.024.

 

[linjuncheung]

Took a few more shots with flash light ... the skin seems seriously infected. What are those white/transparent lumps? Behavior wise ... not eating recently, breathing normally, no twitching or flashing.

 

[Humblefish]

That's a bacterial infection: https://www.reef2reef.com/threads/bacterial-infections.191511/

Which most likely is secondary to a preexisting parasitic or worm infestation.

Prognosis is bleak, but this would be your best option: https://www.reef2reef.com/threads/velvet-amyloodinium-ocellatum.217570/#post-2499437

You'll need to use antibiotics in conjunction with copper/CP: https://www.reef2reef.com/threads/antibiotics.283711/

 

[melypr1985]

Agree with the fellas here. That looks pretty darn bad. You'll have to move fairly quickly to have much of a chance to save him. Follow Humble's instructions in the link he posted and keep us updated.