hey ty ty! I know the answer.
Your fish most likely has a fungus!
The fungus can be various kind, most likely ick or fin rot.
I have 2 favorite products i would like to tell you to buy:
1) MELAFIX (it cures broken fins, skin, etc. it only costs 3-4 dollars at walmart)
2) Tank buddies by Jungle "fungus clear" (This is 3.24 from walmart)
These 2 are ESSENTIAL to keep fish healthy and not sick.
If his eye is white, its most likely a fungus. Are you sure no other fish bit its eye? if so, remove the aggresive fish!
If you need more help, email me at
[email protected]
Good luck!