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Tamasaba Goldfish Care Guide, Diet, Tank Setup & More

Goldfish have always been considered one of the most elegant and beautiful fish. There are so many varieties of goldfish to choose from today and most of them are easy to maintain. One of the rare species is the Tamasaba goldfish which can be easily kept as a pet even by novice fish lovers.


Tamasaba goldfish is called the Yamagata Kingyo or Yamagata Goldfish as it originated from the Yamagata Prefecture in Japan. This rare breed is a result of the crossing of Syounai (single-tailed) with Ryukin (double-tailed).



Its flowy long tail that is similar to that of a mackerel is also the reason why it’s also called a Mackerel Tail Goldfish. These are sometimes mistaken for Sabao goldfish but they are two different species of goldfish.

It has an arched back, a round body with one anal and caudal fin. The arch on their body is not as prominent or high as in the case of Ryukin and they are not as agile as the Sabao. The arch of a Sabao is smaller.


Tamasaba goldfish is shaped like a Ryukin and is a long single-tailed goldfish. This attractive and ornamental species comes in dark red and white colors. It is easy to differentiate between a male and a female.


Tamasaba can grow up to 10 inches in size. They can sometimes grow even larger than the Ryukin.

Behavior & Temperament

They can withstand all kinds of temperatures even cold ones and this is why they are a good pick for both a pond and an aquarium. They can get along well with Koi and they can be paired with most of the pond fish species.

Tamasaba are more like the Common or the Comet and get along well with them than other fancy goldfish.

Tamasaba Goldfish Lifespan

Tamasaba can live for a good life span of up to 10 years when kept in a well-maintained aquarium or fish pond.

Food & Diet

Tamasaba can eat anything from fish food to frozen and fresh foods. A high-quality diet rich in nutrients can increase the life expectancy. Although smaller than the Koi, they can fight for their food when paired with them.

Tank Setup

Tank Size

If you are keeping Tamasaba in an aquarium, you need approx 15 gallons of water for every fish. For 10-15 fish, you need a minimum 130-gallon capacity fish tank. A large aquarium helps them swim freely and attain their full growth potential.

Water Parameters

You must change the water in the aquarium regularly for the good health of these. If you are keeping them in a Tamasaba goldfish pond, you still need to provide filtration and aeration to it. You can also provide biofiltration for your indoor glass or acrylic aquariums.


This is a rare goldfish species that is available in smaller numbers. Some fish breeders breed Tamasaba and Koi fish together and they are shipped from Japan along with the Koi fish.


Tamasaba goldfish can cost as high as $150. You can buy one from any part of the world. Fish breeders generally ship them to most locations by adding their shipping charges to the cost.