Asagi Koi - Cyprinus carpio

Asagi Koi (Cyprinus carpio) are one of the oldest and most traditional koi varieties, easily recognized by their serene blue-gray netted scales across the back and vibrant red or orange coloration on the belly, fins, and gill plates. The contrast of the reticulated scalation and warm accent colors gives the Asagi a refined, timeless appearance highly prized in koi collections.

Description:

Common Name: Asagi Koi

Scientific Name: Cyprinus carpio

Family: Cyprinidae

Size: Up to 24 inches (61 cm) or more in large ponds

Temperament: Peaceful

Difficulty: Easy to Moderate

Native Region:

Japan (selectively bred from common carp)

Aquarium or Pond Setup:

Tank Size/Pond: Minimum 250 gallons; large outdoor ponds preferred

Temperature: 59–77°F (15–25°C)

pH: 6.8–8.2

Hardness: Moderate

Decor: Clear, open swimming areas with smooth surfaces; strong biological filtration and water clarity are key

Additional Tips:

• Behavior: Social, active, and peaceful; thrives in koi groups

• Tankmates: Other koi or large, non-aggressive coldwater fish

• Diet: Omnivorous – quality koi pellets, greens, and protein treats

• Care: Maintain excellent water quality and regular pond maintenance

• Outdoor Care: Cold-hardy; deeper ponds are recommended for wintering in cooler climates