What caused this? pics included

[bigbanker]

Last night I did a small 30% water change. Used prime, temp matched, and everyone made it through the night. Nothing out of the ordinary.

This morning my beautiful roseline was drifting and struggling in the current. I removed him, put him in qt, and went off to work. On my lunch break he seemed to be coming around. I added a pump then because he is used to tons of oxygen. When I came home he was gone. My heart is broken! He was very very healthy until this morning. I've had them about nine months or so in a tank that is always 7.8,0,0,10 for parameters.

I've taken photos of him to see what y'all think.













He only got bloated like this after he died. Previously he was good. The spots on his belly didn't appeay until after he died

 

[Andrew McFadden]

Hmmm not really sure how it happened but I wanted to say sorry for the loss

 

[TidBitz]

Wow weird!!! They are pretty fish sorry for your loss!!!!

 

[ejaramillo01]

Sorry for your lost. Can you explain more about the QT process? Looks to me that was removed from the main tank, and then put into a QT tank?

 

[clearancepuppy]

I am so sorry. It really hurts when you lose one of your creatures you have come to know and love.


I am trying to remember something I read about (here on forum during Sandy and people were trying to save their tanks) carbon dioxide spikes from plants when aeration is gone. Just a crumb to follow and see if anyone knows what I am trying to remember.

 

[bigbanker]

Thanks guys!
About the qt... it is a ten gallon tank. The filter floss for it runs in the dt so it is always cycled. The pump was added about five hours after he was isolated as roselines like highly oxygenated water. He had been coming around before the pump was added. The qt tanks have no plants