Popeye, white coloring, and fish death

[xkon]

So my friend had a 110g and just swapped everything to a 150g. He had no issues with his 110g and it has been up for over a year. No new additions of anything in a long time except one anenome but it was after the symptoms were present. About two weeks after the swap, he had a clown, flame angel and dwarf lion die on him. A pink tail trigger is losing its color and turning white. A scopus tang is doing the same and a pj cardinal now has popeye. His foxface would occasionally get a a few spots that look like ich but none of the other fish would get it.

Any ideas on what this could be? I had him send pics of the trigger and pj.

 

[mattcoug]

Looks like new clean rock in a new clean tank...? Is he checking for basic parameters? It could easily be ammonia poisoning. Popeye is typically a sign of bad water conditions that allow bacteria to overwhelm the fish.

If he moved old sand over he could have poisoned his fish with sulfides.

In any case, moving fish is very stressful to them, especially when they are all moved at once. Stress leads to breakouts of any disease that was sub clinical in his system already. His fish may have been sub clinically carrying velvet/ich/brook/etc.

 

[xkon]

Thanks for the reply. No its the same rock that he had been using for over a year now. When he changed to the new tank there was also about a 50% or greater water change. Nitrates were kinda high but thats about it.

The sand was reused in the tank. If the fish were removed from the tank before the sand was, I would think any sulfide would escape with the removal of the sand and placement in the new tank without a way for it to hit the fish?

Also by subclinical, do you mean basically it could have been dormant in the fish and the stress of the move brought it out?