desease

Question
helo again my fantail goldfish with big eyes has foungus or fog on his eyes he is in a 14ltr tank with a power filter and a fantail and a comet his size is roughly two inches and he has a ornament in his tank.

Answer
Eyes may be cloudy from a number of things.  Most often, it's a bacterial infection.  In older fish, it can be cataracts.  Sometimes it's fungus.  Rarely it may be parasites or something else.  You can try to treat the fantail with some antibiotics to help with the eye as well as aquarium salt and MelaFix to aid in healing.  If the eye was injured from the chasing, an infection could result.  I hope he gets better!