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The fish has a bowel/stomach problem. Try adding 1level tsp of magnesium sulphate per gal of water to the tank. The fish should get better over a few days. Also improve its diet by using a better quality food. Also do more water changes.

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14y ago
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12y ago

Those are the indication of a very sick goldfish. The margins of the fins have receded and have exposed the cartilage that stiffens the fins. It is like asking what are those bones coming out of your hand...they used to be fingers until the skin rotted off.

how can i treat it then? :'(

The condition may likely be caused by a fungal infection. There are drops you can buy at the pet shop that you can put in the water that can bring a fish back around. Some people recommend putting a sick fish into salt water for treatment. I cannot say I have ever tried this so I don't know how much salt or what mix of salt to put in the water for goldfish.

You might want to see how the fish responds to a complete water change-out and a thorough cleaning of the container and gravel. Instead of refilling with tap water, use distilled water. It is a bit expensive but, if the fish improves, you might have found the problem. If you don't want to pay for distilled water, you could collect rainwater...that will work just as well.

thank you so much. they are gone now but i will try it.

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12y ago

this has happened to my fish the string is the fishes number two your fish will be ok but if the strand is not coming out of your fish it means its having tummy problems your probebly feeding it to much otherwise make sure its bowl is really clean

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11y ago

waste

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Q: Your fish has a long white string coming out from behind?
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