Wakin Goldfish
Carassius auratus
About this strain
The Wakin looks like a common goldfish until you notice the tail — it has a fully doubled caudal fin, making it a rare combination of streamlined, torpedo-shaped body and twin tail lobes. Coloration is typically red-and-white or solid red. This is a vigorous, fast swimmer that does well in ponds and is considerably hardier than most fancy twin-tail varieties. It's an important ancestral form, believed to be one of the earliest twin-tailed mutations developed in Asia. Don't mistake its toughness for license to house it with delicate fancies — it's too competitive.
Origin
One of the oldest documented twin-tailed goldfish varieties, developed in China and later refined in Japan. References to Wakin-type fish appear in Japanese records from the 17th century onward.