whats that stuff floating at the top of the tank and scraping the glass with a razorblade might help the pic get clearer. that happened to my sixline a while ago, his eye blew up along with half of his head. No clue what caused it but it survived, it looked a little deformed after but it lived suprisingly
Pop Eye /Cloudy Eye. A very obvious swelling and / or cloudiness of the eyes, this is most often caused by poor water quality or physical damage or abrasion to the eye of which secondary bacterial infections can take advantage of.
This is another gram negative bacteria responsible for this condition and can be treated in a quarantine tank with an appropriate anti-bacterial medication. As with all fish problems, stress is the leading cause of illness, usually water quality can be blamed. In good water quality, this condition most always disappears on it own without further treatment. For extreme cases, as shown in the photo, a medicated treatment would be advised.
It looks like popeye an eye infection.Sometimes cauesed by poor water quality or an injury to the eye.Make a water change immediately and stay on top of it before the other eye get infected or worsen .The eye will come back to normal if you keep the water clean and feed him well.
Sad Sad Sad.. i did a water change and did a few other things listed. when i got home Diva has passed away. and just Shy of moving to a much bigger and better setup