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Ryukin Goldfish

Ryukin Goldfish

Origin

🇯🇵

Japan

Habitat Size

150-400 Liters

Water Type

Fresh Water

Water Temperature

18º-24ºC

Cost in India

₹200 - ₹300

Size

6 - 18 inches (Medium)

Diet

Omnivore

Orange goldfish with white patches swims right against a blue background
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by Happy Pet TeamUpdated on 2 Dec 2025

Ryukin Goldfish (Carassius auratus) is one of the most well-known fancy goldfish types with the hump on the back of the head, rounded short body form, and flowing tail fins. The fish is from Japan and is a regal but active fish that all aquarists enjoy bringing personality and color to their aquariums.

Ryukins come in a range of colors — red, white, calico, orange, and metallic too — and their active swimming personality makes them a joy to observe. Though they are robust and tough, they must be properly maintained so that they do not suffer from swim bladder issues and get stressed by their compact body length.

Origin of the Ryukin Goldfish

The Ryukin Goldfish is native to Japan and found its way to be rumored to have been bred from Chinese Fantail Goldfish in the later half of the 18th century. The name "Ryukin" was given because the fish had been alleged to have been imported from the Ryukyu Islands to Japan.

The selective breeding has produced long-finned and short-finned forms, both of which are of great value for their hump and dignified carriage.

Temperament of the Ryukin Goldfish

Ryukins are energetic, curious, and slightly territorial on occasion. They are more energetic than most other fancy goldfish types and tend to nip fins from time to time, usually at feeding or breeding time.

They coexist amicably with an abundance of space and with suitable tankmates. Their very lively nature makes them fascinating and compelling to observe, especially when kept in groups.

Ryukin Goldfish Compatibility with Other Fish

Ryukins should be kept with other fancy goldfish of similar body size and swimming ability. Never house them with long-bodied or streamlined varieties, who may rival them for food.

Recommended tankmates:

  1. Oranda Goldfish
  2. Ranchu Goldfish
  3. Fantail Goldfish
  4. Telescope Goldfish
  5. Black Moor Goldfish

Do not keep them with aggressive or tropical fishes which live in warm water.

Price Range of the Ryukin Goldfish

The price of a Ryukin Goldfish varies according to fin type, color, and size. They are priced between ₹200 and ₹900 ($3–$11) in India. Long-finned or imported varieties, being less common, are priced higher.

Characteristics

Temperament

Aggressive

Friendly

Compatibility with other fishes

Not Friendly

Super Friendly

Habitat Size

Small

Large

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Habitat Requirements of the Ryukin Goldfish

Initial Setup Cost

₹10,000 - ₹30,000

Water Temperature

18º -24ºC

Water Type

Fresh Water

PH Level

6.5 - 7.5

Tank Setup

  1. Tank Type: Freshwater
  2. Minimum Tank Size: 30 gallons for one Ryukin, +10 gallons for each second fish
  3. Substrate: Smooth sand or gravel
  4. Decor: Plants, smooth rocks, and open swimming area
  5. Lighting: Moderate, a normal day-night cycle

Water Conditions

  1. Temperature: 20–24°C (68–75°F)
  2. pH Level: 6.5–7.5
  3. Water Hardness: 5–19 dGH

Environmental Requirements

Ryukins are prolific waste producers and therefore need good filtration and weekly 25–30% water changes in order to maintain good quality water.

Essential Equipment

Aquarium tank

Water filter

Heater

Light

Decor

Feeding Guide of the Ryukin Goldfish

Avg Monthly Expenses

₹200 - ₹ 300

Ryukin Goldfish are omnivores and prefer to have a mixed diet that will enhance their color and health.

Recommended foods:

  1. High-quality goldfish flakes or pellets
  2. Blanched vegetables such as zucchini, spinach, and peas
  3. Protein foods such as brine shrimp, daphnia, or bloodworms (every alternate week)

Feeding Tip:

  1. Feed in small amounts 2–3 times a day such that they finish food within 2 minutes or less. Overfeeding will cause bloating or swim bladder problems.
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Health & Care of Ryukin Goldfish

Common Health Issues

Fin rot

White spot / ick

Fungus

Swim bladder inflammation

Dropsy (swollen abdomen)

Parasites

Signs of good health

Active

Bright coloration

Good apetite

Signs of sickness

Loss of appetite

Lethargic behaviour

Dull coloring

Swimming abnormally

Cloudy eyes

Common Diseases of Ryukin Goldfish

Swim Bladder Disease

As a stocky, compact fish, Ryukins are prone to buoyancy problems.

  1. Symptoms: Belly-up floating or sinking to bottom.
  2. Treatment: Starve fish 24 hours and then feed blanched peas. Maintain water temperature constant.

Ich (White Spot Disease)

Parasitic disease of bowls of goldfish.

  1. Symptoms: White spots on body and fins, body rubbing against objects.
  2. Treatment: Gradually raise the water temperature up to 28°C and add anti-parasitic medication.

Dropsy

Bacterial infection with swelling and raised scales.

  1. Symptoms: Pineconelike form, swelling of abdomen.
  2. Treatment: Quarantine and administer antibacterial medicine; maintain clean water conditions.

Prerequisites for a Fish

Adequate tank space

Cleanliness

Effort & commitment

Enriching Environment

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Written by

Happy Pet Team

Author

Team Happy Pet is a passionate collective of pet experts, enthusiasts, and advocates dedicated to sharing trusted and insightful content.

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Frequently Asked Questions

How big do Ryukin Goldfish get?

Ryukin Goldfish typically grow to 6-8 inches in length.

What water parameters do Ryukin Goldfish require?

Ryukin Goldfish prefer freshwater with a temperature of 18-24°C and a pH level between 6.5 and 7.5.

What do Ryukin Goldfish eat?

Ryukin Goldfish are omnivores and thrive on a diet of plant matter and protein-based foods.