I just recently setup a Peacock tank, 55 tank running on a magnum 350. I bought a gorgeous Sunburst Peacock as a group of 5 fish (first fish in the tank). The next morning I noticed that he had become the dominant fish in the tank, chasing everyone away from his favorite spot. A couple of days later I introduced 10 new fish into the tank, a couple of the new fish were slightly larger than the Sunburst. 48 hours later I notice that his left eye bulging out, not pop-eye but still bulging out none the same. Took a picture of him and showed it to the LFS that I had purchased him at and they said it was an injury, probably caused by him bumping up against a rock or something. I treated the tank with Melafix for the next 5 days and the bulging went away. However now his eye is completely flat, there is no concavity (if such a word) like a normal eye. Now he swims tilted on the side up above the other fish, he eats and swims normally but I believe he is now BLIND in that eye.
Has anyone experienced anything like this ?