Sick Fish

[STX Diver]

I picked up two fish from my LFS. I was waiting when they were delivered so the LFS never acclimated them or put them in their system. When I put them in my QT I noticed a spot on the dorsal fin of the yellow tang.

I typically will dose prazi then cupramine when I have fish in my QT. I waited a couple days for it and the kole tang to get settled in and then I dosed prazipro. That was yesterday, today I noticed what looks like red splotches on the side of the yellow tang. Both tangs in QT seem to have tattered fins but not too bad.

Can anyone tell me what this spot is on my tang? Also, what is the red marks on his side?

Thanks for the help.

 

[ThRoewer]

It's some kind of a cyst. I have seen this often on yellow tangs in stores or at friends' fish. I'm not sure if it is anything malignant or benign but tend to think it is the latter.
I personally would cut it out, but only after the fish is stable and well acclimated.

The red sores could be wounds from fights or net catching - who knows what this fish went through. They may go away by themselves or require antibacterial treatment.
The more serious possibility would be a beginning uronema infection (of above wounds).

I would wait a day and see if it gets better or worse. In any case I would get antibiotics (kanamycin is easily available) and formalin/malachite green (Rid-Ick Plus is it pre mixed and ready to use) to be prepared to start treatment.

 

[Kidd Reef]

It's some kind of a cyst. I have seen this often on yellow tangs in stores or at friends' fish. I'm not sure if it is anything malignant or benign but tend to think it is the latter.
I personally would cut it out, but only after the fish is stable and well acclimated.

The red sores could be wounds from fights or net catching - who knows what this fish went through. They may go away by themselves or require antibacterial treatment.
The more serious possibility would be a beginning uronema infection (of above wounds).

I would wait a day and see if it gets better or worse. In any case I would get antibiotics (kanamycin is easily available) and formalin/malachite green (Rid-Ick Plus is it pre mixed and ready to use) to be prepared to start treatment.

This. when i worked at a LFS we would get large shipments of these guys at once, Due to having so many different kinda of tanks with many different species of tang in them my boss would dedicate a few of our larger tanks to them for the most part(5-6 a tank, 125gs ea) There would almost always be a dominant one who beat the crap out of all the others and kept the rest in a corner. usually it ended up with most of them looking like your pictures (frayed fins, occasionally red spots.) Unfortunate part of the wholesale business.

Never agreed with Getting so many at once but people go crazy for them(even though the majority of them were being bought by people who wouldnt be properly housing them.) and what can you do when almost every other tank has established Purples and Scopas's in them?