Join Date: Aug 2013
Location: Northern New England, U.S.A
10 gallons is to small for even 1 fancy goldfish. They really need at least 20 gallons.
A general rule of thumb for fancies is 20 for the first and 10 extra gallons for every added goldfish.
So for example, 1 goldfish- 20 gallons, 2 goldfish-30 gallons, 3 goldfish- 40 gallon
Also touching on Sandybottoms questions, the type of filter is important, fancy goldfish need a low flow filter as they have a hard time swimming, also just for futer reference as well, fancies need silk plants since their tails are so long and they can easily get torn.
Is your tank heated or room temp?
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