Kabuto Butterfly Koi - Cyprinus carpio

Kabuto Butterfly Koi (Cyprinus carpio) are a unique variety of koi fish known for their metallic silver, black, and sometimes golden coloration paired with long, flowing fins. “Kabuto” means “helmet” in Japanese, referencing their shiny, armor-like appearance. The elegant finnage of the butterfly koi adds a graceful, dragon-like movement in the water, making them a striking feature in ponds.

Description:

Common Name: Kabuto Butterfly 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:

Originally bred in Japan; derived from wild common carp

Aquarium or Pond Setup:

Tank Size/Pond: Minimum 250 gallons; outdoor ponds are ideal

Temperature: 59–77°F (15–25°C)

pH: 6.8–8.2

Hardness: Moderate

Decor: Open swimming space, smooth rocks, strong filtration, and UV sterilization for clear water

Additional Tips:

• Behavior: Active, social, and curious; best kept in groups

• Tankmates: Compatible with other koi or large coldwater fish

• Diet: Omnivorous – high-quality koi pellets, vegetables, fruit, and occasional protein sources

• Care: Requires pristine water conditions and good pond maintenance due to high bioload

• Outdoor Care: Hardy in most climates; ensure deep ponds for overwintering in colder zones