Fuji Red and White Koi is a distinctive strain within the Red and White (Kohaku) koi group.

Fuji Red and White Koi is a distinctive strain within the Red and White (Kohaku) koi group, and it is also a common ornamental carp variety. Its base color is pure white, with bright red patches distributed over the body. What stands out most is the red patch on the head, whose outline is neat and roughly mountain-shaped, easily reminiscent of Mount Fuji, which is how it got its name.

In judging, this type of fish is valued for a white base like snow and red patches like vermilion, with clearly defined and neat markings, evenly distributed color blocks, and an overall look that is generous and pleasing to the eye. The better the head pattern and the cleaner the white ground, the higher the ornamental value generally is.

In terms of keeping, Fuji Red and White Koi has habits similar to ordinary koi. It prefers clean water rich in dissolved oxygen, and requires a well-equipped filtration system along with regular water changes. Feeding is mainly with specialized compound feed, in small amounts and more frequently, and leftover bait should be removed promptly to avoid fouling the water. When the weather or water temperature changes greatly, feeding should be reduced so the fish can maintain stable digestion.

In daily care, pay more attention to its swimming posture, appetite and changes on the body surface. Once white spots, congestion or rubbing against the tank appear, it should be isolated promptly and the cause investigated. Before new fish are added to the pond, do a good job of temperature acclimation and isolated observation. Keeping the water quality stable in normal times can significantly reduce the probability of disease.