Fish Appears To Be Blind In One Eye? SOLVED

It is quite possible for a fish to lose an eye and live quite happily in an aquarium. In the wild they'd probably be picked off by a predator but there aren't any in an aquarium. As long as a one-eyed fish can find food, it will be fine.
Causes are usually physical damage (caught itself on some decor), the result of an infection, or fighting.


I once had a dragonscale betta which went blind. These bettas have extra thick scaling which is prone to growing over the eye. This is what happened to mine. One eye was completely covered; I don't know if he could see anything with that eye. The other eye had a tiny spot not covered. He managed to find his food and navigate round his tank with no problems.