Nasty red sore on Anthias tail

[TJQ]

Hi -- what do you think this guy has? Treatment suggestions? I just started my second round of prazipro yesterday. Thanks!

Back story (for those who are interested):

I have had these Barlett's Anthias in a 56 gallon QT for about a month. They all came in healthy and were eating like pigs. I did two doses of Prazipro over the first week. At this time there was also a small Regal tang that was itching on the rocks, so I decided to add cuppermine per instructions on the bottle. .25 day 1, .5 day two.

4 out of the 12 Anthias started behaving a little funny like hanging out in the corners straight up or down, with one or two hanging upside down sometimes. I dropped the cuppermine down to about .35 to see if there was a better response --- but things stayed the same.

After this I put the regal tang in a separate QT to maintain the cuppermine, and then removed the cuppermine from the Anthias tank. After about a week of this, I noticed a small red/brown spot on the side of the Anthais and thought it was some sort of infection. Now in just under a week in the above picture you can see a nasty sore that has developed on the tail. The other Anthias seem to be moving slower as well.

 

[alprazo]

Your fish needs a antibiotic. Start with nitrofurazone, it is one of the easier ones to find. Otherwise enrofloxacin in an intramuscular injection.

 

[TJQ]

Thank you! I think I should be able to source some Furan-2 hopefully by tomorrow.