White Balls Inside Goldfish Gills

Guys. I am so tired of having sick fish. I've just had one weird thing after another.

Tank is 75 gallon, cycled. Ammonia & Nitrite :0 Nitrate: 10ppm. ph: 7.4 room temp. Three small/medium fancy telescope goldfish.

I have had problems before with nematodes in this tank, and while I was told they were harmless, there were just so many and I nuked the gravel, hoping to curb the population. They didn't die.

I had four telescopes, all had ich, and even though I was treating it, it wasn't getting better and three of them died. It's weird to me that they would have died from ich in just a few days, and weren't even covered that badly with spots.

I have one of those goldfish left. He never showed symptoms of ich. He had some redness on his chin, which to me looked like a mild bacterial infection. I've been treating with Melafix, both in the tank and a little in his gel food. The redness is almost gone now, and he is not acting sick at all. Fat and happy. So I added two new fish, which in hindsight, I shouldn't have done yet...

Because, I noticed today, that there are white balls inside his gills. This is not ich. These remind me of pimples. I have been researching this and I've found no definitive answer. I can't get a good picture because it's so hard to photograph the inside of his gills. There is nothing on the outside of his body except the very faint remainder of that redness I mentioned.

I did not examine the bodies of the other losses closely enough before I disposed of them. And I wish I could have checked inside their gills.

It looks similar to this, but you'll see nobody gave a definitive answer, and the fish died anyway:
White balls inside gills - any ideas?

But what do I do!? I assume I need to finish the melafix, which should be two more days.

Please help! I need this fish to live!

 

let me do something research and get back
To you

I've never seen this disease before...

But check this out, maybe it will help Large, white ball in fish gills?

 

This is very strange. Do you have any pictures of your goldfish?

 

This is very strange. Do you have any pictures of your goldfish?

There are pictures of someone else with the same issue here White balls inside gills - any ideas?

 

There are pictures of someone else with the same issue here White balls inside gills - any ideas?

I know, I have seen it. I was wondering if we could also get a pic of the OPs fish so we could figure out if it was the same problem. She said that it only looked similar, so it could be different.

 

I know, I have seen it. I was wondering if we could also get a pic of the OPs fish so we could figure out if it was the same problem. She said that it only looked similar, so it could be different.

I'm having a horrible time trying to get a photo, but it looks exactly like the one in the link. My fish is a black butterfly telescope though.

I'm having a horrible time trying to get a photo, but it looks exactly like the one in the link. My fish is a black butterfly telescope though.

LFS suggested PrazI Pro, which I should be getting in the mail tomorrow.