Pearl has lost appetite, 1 bulging eye
My Pearl Gourami has all but stopped eating. I noticed this morning as I was feeding that one eye looks completely normal, but the other is bulging, but not discolored. Looking at her head on, the bulge is clear.
Is this Pop-eye?
Do I quarantine, or do I treat the whole tank for whatever the malady is?
Thanks for any help, it's certainly appreciated.
EDIT: I came home for lunch. 0 nitrites and 20 Nitrates, so that's normal. Ph is right around 7 and the hardness around 8. I also bumped the temp from 78-79 to 80.
None of the Cardinal Tetras or Corydoras are acting different.
The Pearl still has her color, but the eye looks worse.