How is the Short-tail Ryukin different from a standard Ryukin?

The main difference is tail length — the Short-tail Ryukin has a noticeably shorter tail fin and a somewhat chubbier-looking body than a standard Ryukin. As a result, it tends to be an even weaker swimmer than its standard counterpart.

Is this a good goldfish for beginners?

It's generally considered suitable for intermediate keepers, so some prior experience with water quality management and feeding helps. Anyone with basic goldfish-keeping experience should be well equipped to care for one.

How large does it grow?

Adults typically reach around 12 to 18 cm. It's a good idea to plan for a tank with enough room to accommodate that eventual size.

How long does it live?

With proper care, it's said to live around 10 to 15 years. Since it's a long-term companion, keeping its environment stable matters over that whole span.

Can it be kept with other fish?

Thanks to its slow swimming and calm temperament, it tends to do well alongside other gentle, slow-moving goldfish. Pairing it with faster fish isn't ideal, since it may struggle to compete for food.

Short-tail Ryukin

The Short-tail Ryukin is a variant of the Ryukin goldfish prized for its rounded, egg-shaped body paired with a notably short tail fin. This compact tail makes it an even weaker swimmer than the standard Ryukin, giving it a slow, gentle way of moving through the water. Its temperament is calm and easygoing, making it a comfortable tankmate for other goldfish. Considered suitable for intermediate keepers, it rewards attentive water quality management and careful feeding with a long lifespan of 10 to 15 years. Adults reach an impressive 12 to 18 cm, giving them real presence in a tank.

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Short-tail Ryukin key facts

Care level: Intermediate
Lifespan: 10-15 years
Size: 12-18cm
Temperature: 15〜25℃
Diet: Goldfish pellets
Container & Tank: Keep in a tank of 45L or more. Its body catches water resistance and it swims slowly, so set the flow on the gentle side.
Water Temperature & Quality: Keep the water at 15-25°C, ideally 18-25°C. Avoid sudden temperature changes and maintain clean water with one or two changes a week.
Diet & Feeding: Prone to swim bladder disorder, so feed easily digested sinking food in small portions. A fasting day also helps prevention.
Tank Mates & Compatibility: Even slower than a regular ryukin and gentle in temperament, it suits mixing with other slow-swimming varieties.
Notes: High swim bladder disorder risk — watch digestion

TraitsShort tailPlumpRyukin typeCute

About Short-tail Ryukin

Short-tail Ryukin goldfish are known for their round bodies and short tail fins. Calm but slow swimmers, they live 10-15 years and reach 12-18 cm as adults — a good pick for intermediate keepers.

7 things to know before welcoming a Short-tail Ryukin

1Built for Slow Swimming
The combination of a round, chubby body and a short tail fin makes the Short-tail Ryukin an even weaker swimmer than a standard Ryukin. Strong water flow can tire it out quickly, so it's best to keep filter currents gentle.
2Steady Water Quality Care
This breed is considered suitable for intermediate keepers because it can be sensitive to water quality changes. Regular partial water changes and consistent filter maintenance help keep ammonia and nitrite from building up.
3Watch for Buoyancy Issues
Round-bodied goldfish are sometimes prone to swim bladder trouble caused by gas buildup from poor digestion. Feeding smaller portions of an easily digestible goldfish pellet can help reduce the risk.
4Choosing Tank Mates
Because it swims slowly and has a calm temperament, this fish can lose out on food if paired with faster or more aggressive goldfish. Tank mates with a similarly relaxed swimming style tend to work best.
5Feeding Approach
A goldfish pellet formula works well as a staple diet, given in small amounts a few times a day rather than one large feeding. Some individuals gulp air while eating quickly, so it helps to watch feeding behavior and adjust portions accordingly.
6Mind Water Temperature Swings
Goldfish are generally hardy, but sudden temperature shifts during seasonal changes can affect their condition. Whether or not you use a heater, aim to avoid abrupt temperature swings in the tank.
7Prep Before Bringing One Home
Since adults can reach 12 to 18 cm, it's worth setting up a tank and filtration system with enough capacity in advance. With a lifespan of 10 to 15 years, it's also worth confirming you can commit to their care for the long haul before bringing one home.

Frequently asked questions about Short-tail Ryukin

Q.How is the Short-tail Ryukin different from a standard Ryukin?: A.The main difference is tail length — the Short-tail Ryukin has a noticeably shorter tail fin and a somewhat chubbier-looking body than a standard Ryukin. As a result, it tends to be an even weaker swimmer than its standard counterpart.
Q.Is this a good goldfish for beginners?: A.It's generally considered suitable for intermediate keepers, so some prior experience with water quality management and feeding helps. Anyone with basic goldfish-keeping experience should be well equipped to care for one.
Q.How large does it grow?: A.Adults typically reach around 12 to 18 cm. It's a good idea to plan for a tank with enough room to accommodate that eventual size.
Q.How long does it live?: A.With proper care, it's said to live around 10 to 15 years. Since it's a long-term companion, keeping its environment stable matters over that whole span.
Q.Can it be kept with other fish?: A.Thanks to its slow swimming and calm temperament, it tends to do well alongside other gentle, slow-moving goldfish. Pairing it with faster fish isn't ideal, since it may struggle to compete for food.