How big (in gallons) should i get for two small ryukins put together?And i dont want to switch tanks for about 5 years. Does it make sense?

please reply im getting them next sunday

OOPs wrong forum...hehe

plz i really need help here

10 gallons each, a goldfish can be stunted as soon as 8-12 months after birth so the sooner you get a large tank the better

edit: made sure I made "each" bold

A 20 gallon or more, because with a bigger tank, even overstocking is safer than a small tank.