Pond Or 30 Gallon Tank?

[AQUAKING]

I have 3 golfish.
In a 15 gallon coz i broke their 35 gallon.

1 black moor
1 gold 3 tail one
1 silver normal goldfish

Could they go into a pond or have people bread them so much they cant handle they out doors. In which case i will get a 30 gallon tank. Would that be ok.

Thanks

AQUAKING

 

[black angel]

Single tailed goldfish can go in the pond, doubles cant.

 

[AQUAKING]

thanks

 

[Tokis-Phoenix]

Do you know what type of goldfish the "silver normal goldfish" is? Like a comet or common goldfish r something else ?