How big do Oranda goldfish get?
A fully grown Oranda goldfish can reach 25-30cm, around 12" inches in length. The head bubble, or wen, can often start small but grows enormously to cover the eyes of the goldfish.
There are many different types of oranda goldfish. An oranda is a breed of goldfish characterized by a prominent bubble-like 'hood' on the head. The headgrowth or hood (known as wen or crown) may be a prominent growth on the top of the head or may encase the entire face except for the eyes and mouth.