Help my poor Goldie

[Lisak1]

Only 4 days of treatment but I'm happy to report that Goldie is stable. Most of the cottony substance came off and he's swimming much better now. Looks like he will be spending winter indoors with me this year.

Oh, yay! He looks great! Good job!

 

[AngelaM]

Oh, yay! He looks great! Good job!

I swear the poor thing is invincible. I also forgot to mention I took him out of the 50 degree pond and dropped him into a 73 degree aquarium without thinking! I think I'll call him Lucky.

 

[Lisak1]

Well, if I had to choose, I'd pick the 73 degrees any day! Maybe you should call him "Toughy"!

 

[Rajesh]

I swear the poor thing is invincible. I also forgot to mention I took him out of the 50 degree pond and dropped him into a 73 degree aquarium without thinking! I think I'll call him Lucky.

Here, the store suggested to set heater to 77 deg F(25 deg C) for molly tank.

 

[AngelaM]

Here, the store suggested to set heater to 77 deg F(25 deg C) for molly tank.

You don't really need a heater for goldfish. Some people keep them in fish bowls.

 

[AngelaM]

Now my fish seems to be developing black on his fins and under his neck. He is swimming fine and acting like his old self though. Could this be from the treatment or is this an entirely separate issue?!

 

[Rajesh]

You don't really need a heater for goldfish. Some people keep them in fish bowls.

these are two of my shubunkin goldfish,

its good if i compare it to black spots on my fishes,
I would have been worrying about pink patches on your fish head and sides, I am no fish expert.

Hope it recover fast and stay healthy, wish the same for you too, stay healthy!

 

[AngelaM]

these are two of my shubunkin goldfish,
View attachment 106324
its good if i compare it to black spots on my fishes,
I would have been worrying about pink patches on your fish head and sides, I am no fish expert.

Hope it recover fast and stay healthy, wish the same for you too, stay healthy!

The white patches are from where the fungus or bacteria was growing on him. Those spots are actually getting better. The black spots are new and seem to be spreading.

 

[Meyer Jordan]

Now my fish seems to be developing black on his fins and under his neck. He is swimming fine and acting like his old self though. Could this be from the treatment or is this an entirely separate issue?!

You might want to read this.
You obviously have something that is causing an imbalance in the water quality resulting in stressed and immune-compromised fish.

 

[AngelaM]

Update: My blind gold fish is still in the house in an aquarium. I've come to the conclusion the odd way he swims through the water is linked to his blindness. He is doing very well indoors so I guess that's where he will stay.

 

[ShawnInfirmity]

Now my fish seems to be developing black on his fins and under his neck. He is swimming fine and acting like his old self though. Could this be from the treatment or is this an entirely separate issue?!

The black coming afterwards could be a sign of healing much like what happens to them after they’ve been exposed to a high level of ammonia. If you look up “ammonia burns in goldfish” it looks a lot like what your photo shows.