Yes. Fish do this behavior as they are dying. What are the current tank parameters? Size of the tank? How long has it been running? Was it cycled?
Sorry to hear about your tang. Is he stressed?
You can still save him if you can give enough info to help diagnose if he is being stressed. How big and how old is your tank, when did you put the tang, are there any other fish? Do you have power head to agitate water surface? If possible post your water parameter. It could also be parasites clogging his gills.
"parameters are good" isnt really a sufficient answer. We need actual numbers. If ever there was a time to run a full battery of tests on your tank, its now. Test for everything. It doesnt matter if you think its ok or not the cause, just do it. At this point we dont know whats caused the death of your tang and it very well could be still in there. Id post all the test numbers here if possible
Yeah my tang died this mourning.dde22my parameters. Ammonia 0, PH8.3, nitrite no2 0, nitrate no3 0 . So yeah there's my test all came out good. But as I was saying I didn't think he was getting enough oxegen in my tank. I bought to good wave makers yesterday night I pointed them to the surface for agitation but it was to late. So I'm sure it was air also he was stressed when I brought in an angel in my tank I seen the parasites but quickly fought it off like nothing so I'm blameing the stress and oxegen.
how logn has the tang been in there for and how big was it. could have jjust been stress from a cramped environment, could have not been eating there are many possibilities that could have caused it to die, the only info you have given us was the parameters but doesn't tell us what type of water used if ther was copper or chlorine in it. maybe the tang picked up a pebble and it got stuck inside it.
if it was just air a fish isn't stupid and will migrate to the surface to get air. you said it was on the sand bed so i'm ruling out the air.
did you see any nips on it from beign picked on?
Your best bet at this point is to just hold steady and not add anything or change anything, continue with your regular maintenance schedule. After 4-6 weeks, if nothing else develops these symptoms the. You should be good to go
Did you say nitrite is 20 or 2.0? Oops I misread it. Btw how did you acclimate your tang?
Did you check the temp of bag to be the same with DT before moving him in?Drip method for about an hour also he was stressed when he got in my tank swimming all crazy