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Either a small fungal infection or a bacterial infection of columnarius bacteria. If it went away on its own then you don't have to worry about it, but if it won't go away then try rubbing it with s little dab of potassium permanganate. Along with that raise the salt concentration to about 0.3% this should do the trick.
It could well be an ulcer. These usually only occur if the condition of the water the fish is in is bad. Please read the following basic rules of fish keeping and follow them. :- 1 inch of fish needs a minimum of 1 gallon of water. :- Every fish tank needs a continuously running cycled filter. :- Every fish tank needs at least 50% of its water replaced every week. If you follow the above rules you will have few problems keeping fish healthy and the current illness (ulcer) may well go away. If you fail in any of them I can guarantee that your fish will constantly be getting sick and dying.
Sounds like either a bacterial infection or a fungal infection. Treat with potassium permanagate on the spot then raise the salt in the aquarium to 0.3% for best results.
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Where do you get a pink goldfish?
There is no pink goldfish. However, there are pink tropical fish.
Your goldfish has a huge puss spot on their head what is that?
The huge puss-spot is probably a tumor, this is found quite commonly in older goldfish.
Why is your goldfish floating to the top on its side?
Because your goldfish is dead.
Will white spot disease on goldfish go away on its own?
no
Why is there a purple spot on the goldfish?
who knows. maybe it's sick.
Why does your goldfish have a black spot on its head?
It is quite possible that the black spot is part of the fishes colouration. Goldfish often have many different colours in many different shapes and shades anywhere on their bodies or fins.
My goldfish has spot help?
A male goldfish developes white spots when he is about to fertilize the females eggs. It could be possible that you have a male and a female! Congrats!!!
What gender is a goldfish if it white with an orange spot on its head?
Actually, goldfish don't have a specific gender. They are born as females, but as they grow, they turn into males.
Is a goldfish dead when it lays on its side?
if it is not swimming and it lays on its side then it is dead.
What is the answer to the hink pink - spot and precipitation?
rain stain
Could another goldfish in the same tank contract black spot?
I am unaware of "Black Spot" being a disease of fish. So I would say no.
Does the father of the goldfish eggs have to be the male that fertilizes it?
Yes, you will see a white spot on its gills when it is ready to.
