post mortem on a few Anthias

[radicaltour]

Three days ago I got 3 healthy Anthias from an LFS.
They looked active and were all eating frozen mysis.
They all died today in my 37-gal QT which has been up and running for 3 weeks.
The seachem ammonia badge is showing 0.05 ppm.
Last night was the first dose of furan-2 (3 packets for 30 gal per the instructions).

Any guesses on what struck the Carberryi ?



After the Carberryi, I saw the other two Anthias breathing very heavily while hiding and not eating like they used to. So I took them out with the idea of doing a FW dip and a formulin/MB dip.
But just 3 minutes in the freshwater, both the Lyretail and Barlett went belly-up.
I placed them back in the QT right away but it was too late as they gasped for a few minutes and past away.





This is quite disheartening to say the least.
In hindsight the Lyretail and Barlett would have had a better chance of survival if I'd left them alone. I'm hoping to learn from all this.
Should I have left the two Anthias alone and just observe?
Should I have only done a 1-minute FW dip?
What's a better approach than what I'd done?
What's the likely disease in play (ich, velvet, bacterial infection)?

Thank you all.
Paging @Humblefish and @melypr1985 for good measures.
-Dave

 

[Humblefish]

The one in the first photo looks like a bacterial infection: https://www.reef2reef.com/threads/bacterial-infections.191511/

 

[melypr1985]

Agreed wtih infection on the first. There isn't enough evidence for us to make much of a determination on the others I don't think.

 

[GoVols]

Agreed wtih infection on the first. There isn't enough evidence for us to make much of a determination on the others I don't think.

+1
Tagging along

Dave, We feel for you and those were 3 beautiful fish.

Freddie