The Ultimate Guide to Breeding Ryukin Goldfish at Home!

If you’re a goldfish enthusiast looking to expand your collection, breeding Ryukin goldfish at home is a rewarding and fulfilling experience.

These beautiful and unique fish are known for their distinctive humpback and flowing fins, making them popular among hobbyists.

However, successfully breeding Ryukin goldfish requires knowledge, preparation, and dedication. 

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In this ultimate guide, we will take you through the step-by-step ryukin goldfish breeding process at home, from selecting breeding pairs to caring for the goldfish fry.

We will cover everything from setting up the breeding tank and creating the right environment for spawning to feeding and raising the fry. You’ll also learn about the ideal water conditions, breeding behaviors, and potential challenges that may arise during the breeding process. 

Whether you’re a beginner or an experienced goldfish breeder, this comprehensive guide will provide all the information and tips you need to successfully breed Ryukin goldfish at home. 

Get ready to embark on an exciting journey into the world of goldfish breeding! 

Brief Overview of the Ryukin Goldfish Breeds

The Ryukin goldfish breed is known for its distinct hump on the back of its head, and it is believed to have originated in China. This breed comes in various colors, including red, white, orange, and calico, and has a long, flowing double tail.

How Many Goldfish Should Be Kept Together

The Ryukin is similar in appearance to the Fantail goldfish, but it has a more pointed head and a higher dorsal hump. These fish are hardy and adapt well to various water conditions, making them popular among hobbyists.

They are also known for their active and playful nature, often seen darting around the aquarium. Ryukin fancy Goldfish do best in spacious tanks with plenty of vegetation and hiding spots.

With proper care and maintenance, these beautiful fish can live up to 10-15 years and make a stunning addition to any aquarium setup. 

History of Ryukin Goldfish

The Ryukin goldfish boasts a fascinating history steeped in tradition and selective breeding practices. Here’s a glimpse into its journey:

Chinese Origins: While the exact date of their origin remains shrouded in mystery, the Ryukin is believed to have emerged in China, most likely as a mutation of the Wakin goldfish. Some historical references place their existence as early as the 17th century.

Journey to Japan: Ryukins reached Japan around the 18th century, most likely through the Ryukyu Islands (now Okinawa), hence their name. Early Japanese literature refers to them as the “onaga” (long tailed) or the “Nagasaki goldfish.”

Evolution and Variants: Over time, selective breeding in Japan further defined the Ryukin’s distinctive features. Their characteristic egg-shaped body, high dorsal fin, and long, flowing tail became prominent. Various color variations like calico, metallic, and nacreous shades emerged.

Symbolism and Significance: In Japan, the Ryukin symbolized wealth, prosperity, and good luck. Their graceful movements and elegant form added to their charm, making them highly sought-after ornamental fish.

Global Presence: With the rise of international trade, Ryukins found their way across continents, captivating audiences worldwide. Today, they are a popular choice for aquarium enthusiasts, admired for their beauty and relatively hardy nature.

Modern Developments: Even today, breeders continue to develop new variations of the Ryukin, such as the “lionhead” Ryukin with its distinctive head growth. However, preserving the traditional form and characteristics remains a priority for many breeders.

Here are some additional interesting facts about the Ryukin:

  • They are relatively slow swimmers due to their large tail fin.
  • They require spacious aquariums with good water quality.
  • They are generally peaceful fish and can cohabit with other goldfish varieties.
  • They can live for 10-15 years with proper care.

Can you put Ryukin goldfish in a pond? (Aquarium or pond?)

 Yes, Ryukin goldfish can be put in a pond as they are well-suited to pond environments. Ryukin goldfish are known for their beautiful and distinctive appearance, with a prominently arched back and a flowing double tail. 

They are also hardy and adaptable, making them a popular choice for outdoor ponds. When introducing Goldfish Ryukin to a pond, it is essential to ensure that the water temperature suits them, as they prefer temperatures between 65-72 degrees Fahrenheit. 

Additionally, it’s recommended to provide adequate shelter and hiding places for Ryukin goldfish in the pond, as well as maintaining good water quality and an appropriate filtration system. 

Overall, with the proper care and conditions, Ryukin goldfish can thrive in a pond and bring beauty and vibrancy to the outdoor space. Just be sure to research and understand the specific needs of Ryukin goldfish before introducing them to your pond. 

The Easy Way For Breeding Ryukin Goldfish

Breeding Ryukin goldfish can be a rewarding experience, especially if you follow the easy way. First, ensure you have a suitable tank with plenty of space for the Goldfish to swim and spawn. The water temperature should be around 70-74°F, and the pH level should be between 7.0 and 7.4.

Before introducing the breeding pair, condition them with high-quality foods such as bloodworms, brine shrimp, and daphnia.

Once they are ready, place the male and female Goldfish in the breeding tank and monitor their behavior closely. The male will start to chase the female fish as part of the mating process.

After successful mating, the female will lay eggs on plants or spawning mops. Remove the adult fish from the tank to prevent them from eating the eggs. The eggs will hatch in about 4-7 days, and the fry can be fed with infusoria or a commercial fry food. With proper care and attention to water quality, the fry will grow into a beautiful Ryukin goldfish. 

Setting Up the Aquarium for Breeding Ryukin Goldfish

 Setting up a Ryukin goldfish breeding tank involves creating an environment that mimics the natural habitat of these fish, which is essential for their health and successful breeding.

Start by selecting a spacious tank with at least 20 gallons capacity, as goldfish Ryukin fish require ample space to swim and breed comfortably.

It is essential to provide a substrate at the bottom of the tank, such as gravel or sand, along with live plants and decorations to mimic their natural environment. Additionally, a filtration system is necessary to maintain water quality and ensure the optimal conditions for breeding.

Keep the water temperature between 65-75°F and maintain a pH of 7.0-8.4. Lastly, introduce compatible pairs of Ryukin goldfish into the tank, ensuring there is a male and female for breeding.

Establishing a suitable breeding tank for Ryukin goldfish can provide a conducive environment for their reproductive behavior and successfully breed these beautiful and unique fish.

Step-By-Step Process of Breeding Ryukin Goldfish: (Ryukin Goldfish Breeding Process)

Breeding Ryukin goldfish can be a rewarding experience, but it requires careful planning and preparation. Here’s a step-by-step guide to help you navigate the process:


  1. Select healthy, compatible breeders: Choose young and healthy adult Ryukins (around 2-3 years old) with desirable traits you want to pass on. Ensure they have yet to spawn and look for smooth scales, active swimming, and clear eyes.
  2. Set up a breeding tank: A dedicated spawning tank of around 20-40 gallons is ideal. Fill it with conditioned tap water at room temperature and decorate it with spawning plants like Elodea or Vallisneria. Avoid gravel, as eggs can get lost easily.
  3. Condition the breeders: Keep the breeding pair in separate tanks for a few weeks before spawning. Increase water changes and feed them a high-protein diet to condition their bodies for generating. Observe for signs of readiness, like chasing behavior in males and a plump abdomen in females.


  1. Introduce the breeders: Transfer the female to the spawning tank first when both fish are ready. After a few hours, gently introduce the male. Watch for chasing behavior and the male nudging the female’s belly.
  2. Spawning dance: If conditions are favorable, the male will gently chase the female around the tank and “bump” her. The female will release hundreds of sticky eggs among the plants. The male will then fertilize the eggs by releasing sperm over them.
  3. Egg removal: After spawning, immediately remove the parents from the spawning tank to prevent them from eating the eggs. Use a siphon or net to carefully transfer the eggs to a separate hatching tank filled with conditioned water.

Hatching and Goldfish Fry Care:

  1. Egg incubation: Maintain a stable water temperature around 70-75°F in the hatching tank. Eggs should hatch within 2-3 days, depending on water temperature. Avoid handling the eggs during this delicate period.
  2. Feeding fry: Once hatched, the free-swimming fry (baby goldfish) will absorb their yolk sacs for a few days. Then, offer infusoria or finely ground fish flakes as their first food. Gradually increase food size as they grow.
  3. Water changes: Perform frequent small water changes in the fry tank to maintain water quality. Remove any uneaten food or debris to prevent ammonia buildup, which can harm the fry.
  4. Culling: As the fry grows, you may need to cull (remove) weaker or deformed individuals to ensure survival of the fittest. This also helps prevent overcrowding.

Additional Tips:

  • Water quality is crucial throughout the process. All tanks must maintain stable water parameters (temperature, pH, ammonia, and nitrite).
  • Provide adequate hiding places for fry. Plants and small shelters help fry avoid predation and stress.
  • Be patient! Breeding Goldfish can be unpredictable, and success may not happen overnight.
  • Do your research and seek help from experienced breeders. There are many online resources and forums dedicated to goldfish breeding.

Remember, breeding Goldfish is a responsibility. Be prepared to properly care for the fry until they are mature enough to find new homes. If you need more confidence or preparation, consider adopting Goldfish instead of breeding them.

Feeding and care of Ryukin Goldfish newly hatched fry

The feeding and care of Ryukin Goldfish’s newly hatched fry is crucial for their survival and growth. The fry should be fed live food such as infusoria, baby brine shrimp, or micro worms for optimal growth and development for the first few weeks.

It is essential to ensure that the tank water is high quality and free from toxins, as young fry are particularly sensitive to changes in water conditions. Regular water changes and filtration are necessary to keep the tank clean and healthy for the fry.

In addition, maintaining a stable water temperature and providing proper aeration is essential for their well-being.

It is also important to monitor the fry for any signs of illness or stress and to remove any sick or weak individuals to prevent the spread of disease.

With proper feeding and care, Goldfish Ryukin fry can grow into healthy, vibrant adult fish. 

Breeding Ryukin and Wakin Goldfish

Breeding Ryukins and Wakins is generally not recommended, as it can result in offspring with undesirable traits. Both breeds are fancy Goldfish with delicate body shapes and specific fin configurations, and crossing them can lead to issues like:

  • Loss of distinctive characteristics: Ryukins are known for their deep bodies, high dorsal fins, and egg-shaped wen, while Wakins have a more elongated body and a single tail fin. Crossing them might produce offspring with less pronounced features or a mix of body shapes and fin types that could be more aesthetically pleasing. 
  • Health problems: Both breeds are prone to specific health issues, such as swim bladder disorders and eye problems. Crossing them can increase the risk of these problems in the offspring as genetic diversity is reduced.
  • Unsuitable offspring: The resulting fry may not be suitable for pond life, as they might inherit the delicate body shape and fins of the Ryukin, making them more susceptible to predators and water currents.

However, if you’re still interested in breeding Ryukins and Wakins, it’s crucial to do your research and take steps to minimize the risks:

  • Select healthy, high-quality specimens: Choose breeding pairs free from diseases and with well-defined breed characteristics.
  • Condition the fish properly: Ensure the breeding pair is well-fed and in optimal health before attempting to spawn them.
  • Provide a suitable spawning environment: Set up a separate spawning tank with plenty of plants for the eggs to adhere to and maintain good water quality.
  • Monitor the fry closely: Once the fry hatch, keep a close eye on them and remove any with deformities or health problems.

Remember, breeding goldfish should be done responsibly and ethically. If you’re not experienced in goldfish breeding, it’s best to stick to breeding within the same breed to avoid potential complications.

How do you breed Goldfish for beginners?

Goldfish breeding in tanks requires simulating natural conditions. Research compatible breeds, separate mature males and females, provide spawning plants and closely monitor water quality. Let nature take its course!

How do I know when my female Goldfish is ready to breed?

Observe her behavior and physical changes to determine if your female Goldfish is ready to breed. Look for signs such as a swollen abdomen, enlarged vent, and protruding genital papilla. Ensure you have a suitable goldfish tank, a compatible male goldfish, and a spacious and well-maintained environment specifically for the ranchu breed.

Is it hard to breed Goldfish in a pond?

Breeding Goldfish in a pond can be challenging due to various factors. Ponds lack controlled conditions, making monitoring and protecting the eggs and fry difficult. Additionally, predators, water quality fluctuations, and limited space can impact successful breeding in a pond environment.

How old must Goldfish be to breed?

While Goldfish reach sexual maturity around one year old, their best breeding age is 2-3 years when fully grown and producing more viable eggs.

How old do Goldfish have to be to mate?

Goldfish typically reach sexual maturity at around one to two years of age. However, it’s important to note that individual fish may vary in development. It’s advisable to wait until your Goldfish are fully grown, display appropriate physical characteristics, and are in good health before attempting breeding.

How do you pick Goldfish for breeding?

Pick healthy, mature Goldfish (2-3 years old) with desirable traits like vibrant color, good fin shape, and active swimming. Look for plump females and males with breeding tubercles on their gills. Consider compatible breeds and avoid mixing single-tail with fancy goldfish varieties.

Will Goldfish breed in a pond?

Absolutely! Warm springs, ample space, and happy Goldfish? Chances are your pond will soon be a bubbly nursery brimming with fry. But beware, predator parties and population booms come with the territory!

How big do red and white Ryukin goldfish get?

Red and white Ryukins typically grow to 8 inches (20 centimeters) in length, although some exceptional goldfish have reached up to 10 inches! Remember, these chunky Goldfish need spacious tanks to thrive, with a minimum recommended tank size of 50 gallons for the first one and an additional 20 gallons for each new friend.

Are there red and white ryukin goldfish for sale?

Yes, red and white Ryukins are popular! Search online retailers like LiveAquaria, The iFISH Store, or local fish stores in Alabama. Consider breeder auctions or classifieds for a more comprehensive selection, but prioritize reputable sources to ensure healthy fish.

What Are the Different Ryukin Goldfish Breeds?

The different breeds of Ryukin goldfish include the Calico Ryukin, Red and White Ryukin, Tri-color Ryukin, and Chocolate Ryukin. These breeds are known for their distinct color patterns and body shapes, making them popular among goldfish enthusiasts.

How to Cull Goldfish Oranda?

First, to cull a goldfish Oranda, observe the fish for any physical deformities or health issues. Use a net to separate the affected fish from the others. Then, humanely euthanize it using a method like clove oil anesthesia or a swift blow to the head.

Do male Goldfish have white spots?

While some male goldfish species develop breeding tubercles during the breeding season, these appear as small, white bumps, not spots. White spots on Goldfish can indicate various health issues, so observing other symptoms and consulting a fishkeeper or veterinarian is crucial. 

Can small Goldfish eat pellets?

Yes, small Goldfish can eat pellets. Pellets are a suitable and convenient food option for Goldfish as they provide balanced nutrition and are easy to consume and digest.


In conclusion, the captivating world of goldfish keeping is enriched by the charm and beauty of the Ryukin goldfish. As we’ve delved into their unique characteristics, care requirements, and the joy they bring to aquarium enthusiasts, it’s evident that these vibrant creatures are more than just aquatic pets—they’re living artworks. Whether you’re a seasoned aquarist or a beginner, the experience of breeding Ryukin goldfish is unparalleled. Their graceful movements and striking colors create a mesmerizing underwater ballet, transforming any tank into a living masterpiece. So, if you’re ready to enhance your aquatic haven and embark on a journey of wonder and discovery, consider adding the enchanting Goldfish Ryukin to your collection. Happy Ryukin Goldfish breeding!

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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