Red Ryukin Goldfish are a classic fancy goldfish variety known for their deep body, pronounced shoulder hump, and flowing fins. The solid red coloration gives them a bold, elegant presence in both aquariums and ponds.

🌿 Variety Overview

• Common Name: Red Ryukin Goldfish

• Scientific Classification: Carassius auratus (fancy variety)

• Body Type: Deep-bodied with prominent dorsal hump

• Temperament: Peaceful

• Swimming Style: Strong but slightly rounded movement

The Ryukin is one of the most recognizable fancy goldfish due to its high back and curved profile.

🎨 Appearance

• Solid bright red to deep orange-red coloration

• Distinct high shoulder hump behind the head

• Double tail (fan-shaped or long flowing tail)

• Metallic scale finish

• Full dorsal fin (unlike ranchu varieties)

Color intensity improves with quality diet and proper lighting.

📏 Size & Lifespan

• Juvenile Size (Common Sale Size): 5–8 cm

• Adult Size: 15–20+ cm

• Lifespan: 10–15 years (can exceed with excellent care)

Ryukins grow larger than many beginners expect, so tank planning is important.

💧 Ideal Water Parameters

• Temperature: 18–24°C

• pH: 6.5–7.5

• Hardness: Moderate

• Filtration: Strong filtration required

• Weekly 30–50% water changes recommended

Goldfish produce significant waste, so filtration capacity matters.

🏡 Tank & Pond Setup

• Minimum Tank Size (Single): 100 liters

• Add 40–60 liters per additional fish

• Bare-bottom or smooth substrate

• Open swimming space

• Gentle décor (avoid sharp edges)

They can also be kept in outdoor ponds in suitable climates.

🐟 Compatibility

• Best kept with other fancy goldfish varieties

• Avoid fast single-tail goldfish (comet/common)

• Do not mix with tropical fish

• Peaceful and social

Keep similar body types together to avoid feeding competition.

🍽 Feeding

• High-quality sinking goldfish pellets

• Blanched vegetables (peas, spinach)

• Occasional bloodworms or brine shrimp

• Avoid excessive floating food (prevents buoyancy issues)

Feed small portions 1–2 times daily.

📈 Care Level

• Difficulty: Easy to Intermediate

• Hardy but requires strong filtration

• Sensitive to poor water quality

🌟 Why Choose Red Ryukin Goldfish?

• Bold solid red coloration

• Classic high-back “hump” body shape

• Elegant double tail

• Long lifespan

• Excellent for display aquariums or ponds

Red Ryukin Goldfish bring vibrant color and classic fancy goldfish elegance to any setup, making them a timeless choice for hobbyists of all levels.