Damsel fish dead.

[Macscale]

Alright guys,
This isn't in my tank, it's a friends.
In the past week both of her damsels have died. One of there eyes got bigger and turned completely blue, and then they turned brown.

Parasite?
Diatom Poinsining?
What could have happened?

 

[Macscale]

Parameters to come. When I checked them on Monday for her, they were all perfect. Except for calcium, but a water change fixed that.

 

[Macscale]

Everything is good, the only thing that could be an issue is nitrates at 5. But that's nothing so.

 

[bribo12]

That's not gonna kill fish though. How long did she have the damsels?

 

[Macscale]

A month and a half.

 

[bribo12]

Hmm I do not know

 

[54seaweed]

how big was the tank
damsels in a confined space will kill each other off
just thinking outside the box

 

[Macscale]

They were in QT because they weren't eating well.

 

[trnewsom]

The eye thing sounds like pop-eye.