I know this is old post, but I have a small Yelp tang that had been doing great in the DT. Fish added to DT have been either through humble.fish QT protocol or acquired through TSM (when they were humble.fish approved).
Yellow tang has then starting acting weird over the last couple of weeks. It had not been sleeping in its usual spot at night and was often found swimming around sometimes at an angle at night. Then found it laying on its side on the gravel. Kicking up flow for more oxygenation seemed to help for a day then was laying on the gravel again.
I then quickly set up a hospital tank last night and dosed Prazipro and metronidazole. I’ve ordered MB, Kanaplex, and Formalin but won’t be here for a week. At least I’ll be better stocked for other emergencies. Today fish is on bottom, still breathing, moving fins more than last night. I’m progressively cooling tank and will decrease salinity tonight with next metronidazole dose. Mixed up medicated food with metronidazole and neomycin, but fish not eating. I do have methylprednisolone but fish too small for me to attempt IM injection (and don’t have anything to sedate fish). Would adding the steroid to the water be an option?
If no improvement by tonight, but may wait until tomorrow, thinking of doing a fresh water dip.
Hoping for the best. Thank you.