Utsuri Koi, part of the Utsurimono group, are two-colored koi featuring a black (sumi) base with either white (Shiro Utsuri), red (Hi Utsuri), or yellow (Ki Utsuri) patterns overlaying it. Their dramatic contrast and striking patterns make them highly prized in koi ponds and shows.
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Utsuri Koi, part of the Utsurimono group, are two-colored koi featuring a black (sumi) base with either white (Shiro Utsuri), red (Hi Utsuri), or yellow (Ki Utsuri) patterns overlaying it. Their dramatic contrast and striking patterns make them highly prized in koi ponds and shows.
Utsuri koi have a bold black body pattern with a secondary overlay color. Shiro Utsuri features jet-black sumi with snow-white patches; Hi Utsuri displays deep red markings; Ki Utsuri is marked with golden-yellow. Sumi patterns often wrap around the body and extend onto the head, creating balance and symmetry.
25–35 years; up to 40 years in ideal pond conditions
Omnivorous; requires a balanced diet of high-quality koi pellets, protein-rich supplements like worms and shrimp, as well as fresh vegetables and fruits. Diet should be adjusted seasonally based on water temperature.
Utsuri Koi are a timeless variety in the koi world, admired for their bold sumi and contrasting patterns. Shiro Utsuri, Hi Utsuri, and Ki Utsuri each offer unique beauty, making them a must-have for serious koi keepers and enthusiasts. Their strong patterns and long lifespans make them both rewarding and enduring companions.
Intermediate – requires a spacious pond, stable water quality, and high filtration capacity.
500+ gallons pond (1000+ gallons recommended for groups)
7.0 to 8.0
5–15 dGH
59–77°F (15–25°C); cold-hardy but require protection in freezing conditions.
24–36 inches (60–90 cm), depending on genetics and pond conditions
Compatible with koi, goldfish, orfes, and other large, peaceful pond fish. Avoid aggressive or predatory fish.
Aggressive or fin-nipping species such as cichlids or predatory catfish. Avoid overcrowding koi ponds, as it may lead to stress or poor growth.
Cyprinus carpio (Utsurimono variety)
Cyprinidae
Japan – one of the earliest koi varieties developed and refined over centuries.
Schooling and community-oriented fish; thrive best with other koi and goldfish. They are peaceful, active, and enjoy swimming in groups.
Feed 1–2 times daily during warm seasons with koi pellets, fruits, vegetables, and protein-rich treats. In colder months, reduce feeding and use wheat germ-based foods for easy digestion.
Egg scatterers that breed in spring and summer when water warms. Females release thousands of eggs that males fertilize externally. Eggs are deposited on plants or spawning brushes. Adults do not guard eggs and may eat them, so separation during breeding is advised.
pH: 7.0–8.0, Temperature: 59–77°F (15–25°C), Hardness: 5–15 dGH, Ammonia/Nitrite: 0 ppm, Nitrate: <40 ppm. Large ponds with strong aeration are essential.
Susceptible to parasitic infestations, bacterial infections, and koi herpesvirus (KHV). Proper pond hygiene, quarantine of new fish, and consistent water parameters are critical for long-term health.
Peaceful, social, and active pond fish. Utsuri koi are strong swimmers and thrive in groups, displaying curiosity and often recognizing their owners over time.
The Utsurimono group of koi is one of the oldest and most traditional koi varieties in Japan. These koi are characterized by their deep sumi (black) base overlaid with contrasting colors—white, red, or yellow. The three main types are Shiro Utsuri (black and white), Hi Utsuri (black and red), and Ki Utsuri (black and yellow). Shiro Utsuri is considered the most refined and is highly valued in competitions for its clean white and bold sumi contrast. The striking two-color design of Utsuri koi makes them highly visible and captivating in ponds, especially in clear water.