I need help!! Gold fish's gill being eaten away by unknown force

[SparklE fin]

My goldfish Akis left gill being eaten away by an unknown force!! I've been treating him for all kinds of diseases and inbetween it's major water changes and testing the water quality and using carbon something. And if I don't, his gill turns bright red with a white fungus on it. Plus, there is a growing large bump on his gill. It's strange because his other gill looks healthy. Hes acting like a Normal goldie, Not clamped fins, scavenging, eating all he can get, trying to get everyones attention. The vet says to put him down because "You can easily get another." he's in a 20+ gallons with a hang on back Filter and a few airstones. He's parameters is Ph 7.8 and just crystal clear. You guys are my only hope here. I've tried so many natural and unatural treatments, I just don't know what to do anymore. You guys are my last hope here

[Bacon Is Good]

Do you have a pic

[LaLaLeyla]

Have you tried fungus medication? Or melafix?

[BettaMiah]

Hmmm... Sounds like some kind of fungus. What type of a goldfish do you have there? DO you have any pictures? Unless I know more I can't really tell you much besides that you ought to make sure he has VERY clean water and that he's eating and not clamped and such.

[SparklE fin]

Originally Posted by LaLaLeyla

Have you tried fungus medication? Or melafix?

I've tried both. For about a 2 weeks and a half, I believe

[SparklE fin]

Originally Posted by BettaMiah

Hmmm... Sounds like some kind of fungus. What type of a goldfish do you have there? DO you have any pictures? Unless I know more I can't really tell you much besides that you ought to make sure he has VERY clean water and that he's eating and not clamped and such.

He's a little fast and hates my iPod but I'll try

[thekoimaiden]

I agree. A picture would be very helpful. It will probably be easiest to handle the fish and get a picture of the gill that way. If not, could you find a picture of it online that looks close to the infection. I would also like you to answer as many of these questions as you can: Please answer as many of these questions as you can when seeking help Copy and paste it in a post here.

[SparklE fin]

Sorry, it's in the 100's where I live. I got heatstroke and was at the hospital. That sucked this is the clearest pic I could get. I had to distract him with my fingers. You think it might be fungus.. I tried fungus treatment already. Should I go to a different vet?

[SparklE fin]

Originally Posted by thekoimaiden

I agree. A picture would be very helpful. It will probably be easiest to handle the fish and get a picture of the gill that way. If not, could you find a picture of it online that looks close to the infection. I would also like you to answer as many of these questions as you can: Please answer as many of these questions as you can when seeking help Copy and paste it in a post here.

Housing
What size is your tank? Not sure but definitely over 20
What temperature is your tank? Room temp
Does your tank have a filter? Hang on back filter
Does your tank have an air stone or other type of aeration? 2 airstones
Is your tank heated?no, Im trying to bring the temp down
What tank mates does your betta fish live with? None

Food
What type of food do you feed your gold fish? Dark greens, parsley, romaine lettece etc Sometimes he eats an occasional bug from the surface. Sometimes flakes. Bananas. Peas
How often do you feed your gold fish? Few times a day

Maintenance
How often do you perform a water change? 2 times a week
What percentage of the water do you change when you perform a water change? I'd say about 15%-20%
What type of additives do you add to the water when you perform a water change? Dechlorinator, stress coat, carbon(in filter)

Water Parameters:
Have you tested your water? If so, what are the following parameters?

Ammonia: 0
Nitrite: 0
Nitrate: 0
pH: 7.8
Hardness:
Alkalinity:

Symptoms and Treatment
How has your gold fish's appearance changed? Gill looks like eaten away Bump on chin
How has your gold fish's behavior changed? Sleeps more often
When did you start noticing the symptoms? When gill turned crimson red
Have you started treating your fish? If so, how? My friend suggested all these medicines. Other than that methylene blue and salt dips
Does your fish have any history of being ill? He's new
How old is your fish (approximately)? I think a few months

[thekinetic]

Hmm it could be gill flukes. Tell me does it scrape against objects or pant at the water's surface?