
Red & White Ryukin Goldfish 5cm
Red & White Ryukin is a stunning, high-backed fancy goldfish known for its deep body shape, graceful fins, and vibrant coloration. They are hardy, personable, and highly sought after in both beginner and advanced goldfish setups.
Appearance
- Body Shape: Deep, rounded body with a pronounced dorsal hump behind the head (signature Ryukin trait)
- Fins: Long, flowing fins; may be short-tail or long-tail variety
- Coloration: Crisp white base with vivid red patches — patterns vary fish to fish
- Adult Size: 6–10 inches typically; some can grow larger in large aquariums or ponds
- Temperament: Peaceful but food-competitive; best with other fancies
Care Requirements
Tank Size
- Minimum: 30 gallons for one
- Add: +20 gallons per additional Ryukin
- Larger tanks greatly improve growth, longevity, and water quality.
Water Parameters
Ryukins are hardy but benefit from stable, clean water:
- Temperature: 18–22°C (65–72°F)
- pH: 7.0–8.0
- Hardness: Moderate–hard
- Ammonia/Nitrite: Always 0
- Nitrates: Preferably < 40 ppm
They are cold-water tolerant but should not be mixed with fast, slim-bodied goldfish like comets or shubunkins.
Filtration & Flow
- Require strong biofiltration due to heavy waste output
- Prefer moderate flow — too much current can stress long-finned varieties
- Double filtration is recommended (e.g., sponge + hang-on-back or canister)
Diet
Ryukins are enthusiastic eaters:
- Staple: High-quality sinking goldfish pellets
- Additional: Gel foods, leafy greens (spinach, kale), blanched peas, bloodworms, daphnia
- Avoid: Excess floating pellets (risk of swim bladder issues)
Feed small meals throughout the day rather than one large feeding.
Tank Mates
Appropriate tank mates:
- Other fancy goldfish (Oranda, Ranchu, Fantail, Pearlscale, etc.)
- Do not mix with slim-bodied or fast-swimming goldfish
Common Issues
- Swim bladder sensitivity (avoid overfeeding & floating foods)
- Fin tears in tanks with sharp décor
- Poor water quality due to high waste
Fun Facts
- Ryukins originated in Japan, believed to have come from the Ryukyu Islands (modern-day Okinawa).
- Their dorsal hump becomes more pronounced as they grow.
- They recognize their keepers and can be trained to hand-feed.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Red & White Ryukin is a stunning, high-backed fancy goldfish known for its deep body shape, graceful fins, and vibrant coloration. They are hardy, personable, and highly sought after in both beginner and advanced goldfish setups.
Appearance
- Body Shape: Deep, rounded body with a pronounced dorsal hump behind the head (signature Ryukin trait)
- Fins: Long, flowing fins; may be short-tail or long-tail variety
- Coloration: Crisp white base with vivid red patches — patterns vary fish to fish
- Adult Size: 6–10 inches typically; some can grow larger in large aquariums or ponds
- Temperament: Peaceful but food-competitive; best with other fancies
Care Requirements
Tank Size
- Minimum: 30 gallons for one
- Add: +20 gallons per additional Ryukin
- Larger tanks greatly improve growth, longevity, and water quality.
Water Parameters
Ryukins are hardy but benefit from stable, clean water:
- Temperature: 18–22°C (65–72°F)
- pH: 7.0–8.0
- Hardness: Moderate–hard
- Ammonia/Nitrite: Always 0
- Nitrates: Preferably < 40 ppm
They are cold-water tolerant but should not be mixed with fast, slim-bodied goldfish like comets or shubunkins.
Filtration & Flow
- Require strong biofiltration due to heavy waste output
- Prefer moderate flow — too much current can stress long-finned varieties
- Double filtration is recommended (e.g., sponge + hang-on-back or canister)
Diet
Ryukins are enthusiastic eaters:
- Staple: High-quality sinking goldfish pellets
- Additional: Gel foods, leafy greens (spinach, kale), blanched peas, bloodworms, daphnia
- Avoid: Excess floating pellets (risk of swim bladder issues)
Feed small meals throughout the day rather than one large feeding.
Tank Mates
Appropriate tank mates:
- Other fancy goldfish (Oranda, Ranchu, Fantail, Pearlscale, etc.)
- Do not mix with slim-bodied or fast-swimming goldfish
Common Issues
- Swim bladder sensitivity (avoid overfeeding & floating foods)
- Fin tears in tanks with sharp décor
- Poor water quality due to high waste
Fun Facts
- Ryukins originated in Japan, believed to have come from the Ryukyu Islands (modern-day Okinawa).
- Their dorsal hump becomes more pronounced as they grow.
- They recognize their keepers and can be trained to hand-feed.













