Updated On June 17th, 2017
Pet's info: Fish | Unknown - Fish | Male
Answered By Dr Stafford, BVetMed, MRCVS 156
Veterinarian
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Hi there, when you change a tank over you should take some water from the previous tank then make it up with freshwater. You should let this stabilise for one week before adding the fish. If you put a fish straight into a new tank without letting the water acclimitise it can be a shock to it's system. At this point all you can really do is let the fish settle in and don't disturb its tank for a week or so.
4Pet Parents found this answer helpful
Other Answers
Answered By Angel Alvarado, LVT
Licensed Veterinary Technician
Check the water temperature. Goldfish are cold water fish but if the water is too cold, it will affect activity. Aim for a temperature between 65 F and 72 F. A sudden change in water temperature can cause shock which may affect his movement also.
1Pet Parents found this answer helpful
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