My ocellaris clownfish seems to have gone blind recently, because he bumps into the rocks more often than he used to and just generally looks like he can't see anything. I have been target feeding with a baster this week but he has been eating poorly and today wouldn't eat at all and only swims on his side/upside down near the surface of the water. I feed frozen mysis.
Background: tank is over a year old, has this clownfish and a chromis and Banggai cardinal. I haven't tested the water in a while but when I went to my LFS
2 weeks ago ammonia/nitrite tested 0 and nitrate was low, around 20 ppm
It doesn't look like popeye but his eyes do look slightly different. They are not very cloudy though. The other 2 fish are acting completely normal. What should I do? I think he might be on his way out soon.
YouTube - Sick Clownfish?