Sick Goldfish

[sesaunders12]

My daughter decided to get some goldfish. We had a tank cycled and ready for them before they brought them home. All the other fish are doing great. We have one that seems to be just kind of treading water. It doesn't swim a lot like normal goldfish. It Also isn't eating well. I moved it to a small 2 gallon hospital tank just in case. It is showing no other signs of disease. Any ideas or suggestions for more I can do for it?

 

[fluttermoth]

Hi there, sorry to hear your fish isn't doing so well.

Before we can help you; how many goldfish do you have, how big is their tank and how, exactly, did you cycle it? Have you tested the water at all and if so, what were the results?
Has the hospital tank got a cycled filter?