Fish Kill but not tube anemones or mushroom corals

[lidallas]

I recently added some fish to an established aquarium and at the same time did a partial water change. Over three days all the new fish and the old ones died but my tube anemones and mushroom corals did not. I suspect the water but testing parameters all seemed normal. Any idea what would kill the fish but not the anemones or corals?

 

[mr. limpid]

There are so many things that could of happened, there many things that kill fish but not inverts. Need more info about the fish and time frame this happen in.

 

[lidallas]

Fish were longnose hawk, yellow tang, 3 pajama fish, coral beauty, mandarin, firefish, and fox face. New fish tang, coral beauty, and mandarin added 9 August; dead on 10 august along with longnose hawk; fox face and firefish dead on 10 August and the 3 pajama fish dead on 11 August. But anemones and mushrooms still doing well. I think it has to be the water but no idea what is wrong with it since tests were OK. Thanks for the resoonse.

 

[mr. limpid]

From this the only thing i would suggest is not add more than one fish at a time and to QT each fish B4 adding to DT. The only thing I can think of that kills that quick is ammonia, but should of effect the inverts as well.

 

[lidallas]

Thanks. I will take your advice and see how it works out.