Description

Koi Fish (Cyprinus rubrofuscus)

📌 Basic Info

• Scientific Name: Cyprinus rubrofuscus

• Family: Cyprinidae

• Origin: Japan (bred from common carp)

• Size: 18 – 36 inches (45 – 90 cm), depending on variety and pond size

• Lifespan: 25 – 35 years (some live 50+ years with proper care)

• Tank Zone: All zones (active swimmers throughout pond)

🌊 Water Parameters

• TDS: 150 – 300 ppm

• pH: 6.8 – 8.0

• Temperature: 15 – 25°C (59 – 77°F), coldwater fish but hardy to wider range

• Hardness: 5 – 15 dGH

🐟 Characteristics

• Brightly colored ornamental carp with patterns of white, red, yellow, orange, black, and blue.

• Symbol of luck, prosperity, and longevity in many cultures.

• Intelligent and social – can recognize owners and even feed from hands.

• Thrive best in outdoor ponds but can be kept in very large aquariums temporarily.

🍽️ Food

• Type: Omnivorous.

• Diet: High-quality koi pellets, vegetables (peas, lettuce, spinach), fruits (orange slices, watermelon), worms, shrimp, insects.

• Feeding: 1–2 times daily; adjust amount based on pond temperature (they eat less in cooler water).

🛠️ Maintenance

• Tank/Pond Size: Minimum 250 gallons per koi (best suited for outdoor ponds).

• Filtration: Very strong filter with high oxygenation (they produce a lot of waste).

• Decor: Smooth rocks, pond plants, shaded areas; provide plenty of swimming space.

• Water Change: 20–30% weekly for ponds/tanks; ensure stable water quality.

👥 Social Behavior

• Minimum Group Size: At least 3–4 (they are social fish).

• Tank Mates: Goldfish, Orfe, Plecos (large), peaceful pond fish.

• Avoid: Aggressive fish or tropical species with different requirements.

✅ Do’s

• Keep koi in large outdoor ponds for best growth and health.

• Provide high-quality filtration and aeration.

• Feed a balanced, seasonal diet (special koi food in winter/summer).

❌ Don’ts

• Don’t overcrowd ponds (they grow very large).

• Don’t mix with aggressive or predatory fish.

• Don’t neglect water quality – they are sensitive to poor conditions.

⭐ Quick Tips

• Long-living, majestic pond fish admired worldwide.

• Best for outdoor ponds, not small aquariums.

• Friendly, hardy, and a symbol of good fortune – a true centerpiece fish.