Tosakin Goldfish
  Origin - Japan Difficulty - Advanced
  Availability - Very Rare Adult Size - 5 to 7 inches
  Price - Expensive Scales - Metallic or Matte



  Show Winning Tosakin - Several top quality specimens.

  Yellow Tosakin - A brilliant gold colored Tosakin.

  Baby Tosakins - Lots of juvenile Tosakins swimming in a tub.

  Dragon Eye Tosakin - A juvenile Tosakin with telescope eyes...very rare.


History and Origin of Tosakins

An ornamental pond fish bred in Japan, the Tosakin is the only goldfish breed to have an undivided double tail. The tail forms a perfect half-circle when seen from above.

It was bred originally from Ryukin ancestors by Japanese Samurai in the mid 1800s in the Kochi Prefecture of Japan. It almost went extinct after an Earthquake, but was revived in the mid-20th century. Even so, it is very rare within Japan and almost unheard of within the US. Naturally, this also makes it expensive. But Tosakin are the caviar of goldfish when it comes to Pond fish. The price tag reflects quality Tosakins go for as much as Ranchus. Hundreds of dollars.

Special Care for Tosakins

Though they were bred to be viewed in a pond from above, they are more delicate than other pond breeds. Care should be taken not to expose them to potential preditors, and to make sure there is nothing in the pond (or aquarium) which will damage their large caudal fin.

They are really terrible swimmers, and should be kept with their own kind or with other breeds that are bad swimmers as well, to ensure that they get their share of food. Obviously they need to be kept in ponds or pond-like aquariums with a lot of horizontal room, since their tails take up so much space. For obvious reasons, the pond should have little or no current. Despite the fact that they were bred for ponds, they do not tolerate cold temperatures as well as Common Goldfish.

Ideal Characteristics for Tosakins

Juvenile black Tosakins

Tosakins have a short egg shaped body similar to an Eggfish. Tosakin fins are similar to a standard Fantail except for the Caudal fin. Unlike every other goldfish breed, the caudal fins on the Tosakin are completely fused, forming a single broad round fin coming off the tail.

Tosakins are intended to be viewed from above. The signature attribute of the breed is their magnificent and elaborate caudal fin. The fin flips at the outer edges, giving the tail it's trademark twisting wavy appearance. The caudal should only twist once or twice on each side...more than that is often acceptable, but not ideal. The outer edge of the tail should have a scalloping effect, showing points and ridges from the ray of the fin. All other fins conform to the same standards as a Fantail. All the fish shown on this page are ideal specimens.

Mottled orange and white seems to be the dominant color of most Tosakins, but they can also be found in red, white, calico, black, and yellow. As with other goldfish, color that saturates the fins is desirable, but transparent fins seem to be common in this breed.

Known Variants of Tosakins

An example of the rare Telescope variant of the Tosakin

There is a rare telescope variant that looks identical to the standard Tosakin but with globe-eyes.

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