Ryukin-Calico 100-120mm

Calico Ryukin Goldfish (Carassius auratus)

The Calico Ryukin is a fancy goldfish variety prized for its vibrant calico colours and distinctive high-backed body shape. Known for a pronounced hump behind the head, flowing fins, and a full tail, the Ryukin is both elegant and hardy, making it a favourite among goldfish enthusiasts.

Quick Overview

• Scientific Name: Carassius auratus
• Common Name: Calico Ryukin
• Size: 12–20 cm
• Lifespan: 10–15+ years
• Temperament: Peaceful
• Care Level: Moderate

Appearance

Calico Ryukins display a mix of colours—orange, white, black, and sometimes blue—in a mottled calico pattern. They have a rounded body with a deep dorsal hump, a full, flowing tail, and long, graceful fins. Their striking appearance is complemented by lively swimming behaviour.

⚠️ Tank Size Requirements (Very Important)

Fancy goldfish require proper space to thrive:

• ✅ Minimum: 60 litres per goldfish
• ⭐ Ideal: 80–100 litres per goldfish
• ❌ Bowls and small tanks are not suitable

👉 Example:

• 2 Calico Ryukins = minimum 120L (ideally 160–200L)

Proper volume ensures healthy growth, swimming ability, and water stability.

Tank Requirements

• Temperature: 18–24°C
• pH: 6.5–7.5
• Filtration: Strong (goldfish are heavy waste producers)
• Setup:
  • Smooth substrate or bare bottom
  • Open swimming space
  • Gentle décor to prevent fin damage

Diet

Omnivorous:

• High-quality sinking goldfish pellets
• Gel foods for digestive health
• Blanched vegetables (peas, spinach)
• Occasional protein treats

Tank Mates

• Best kept with other fancy goldfish
• Avoid:
  • Fast-swimming goldfish (common/comet)
  • Fin-nippers
  • Tropical species

Behavior

• Peaceful and social
• Active and graceful swimmers
• Enjoy company of similar-sized fancy goldfish

Special Considerations

• Heavy waste producers → regular maintenance needed
• Sensitive to poor water quality
• Overfeeding or floating-only diets can cause buoyancy issues

Why Choose a Calico Ryukin?

With its high back, flowing fins, and vibrant calico pattern, the Calico Ryukin is a visually striking and hardy goldfish—perfect for hobbyists looking for a colourful, interactive centerpiece.