The prized nishikigoi of Japanese gardens did not begin in imperial palaces. In the early nineteenth century, farmers in the snowbound mountains of Niigata raised common carp in terraced hillside reservoirs to sustain their villages through the long winter. One season, a carp mottled with bright crimson scales surfaced in a quiet mountain pond. Ripples spread gently beneath the arched wooden bridge where moss-covered stones and maple leaves frame the crystal water.

Instead of putting the unusual fish into the winter cooking pot, the mountain villagers spared it and carefully bred its offspring across generations. Through patient selection in clear alpine snowmelt, snow-white skin, vermilion patches, and sumi black markings gave birth to living brocade—ornamental carp dressed in silk and gold. Every glide of crimson and gold scales beneath the water lilies brings serene harmony to the timeless courtyard pond.

Each classic variety of brocade carp carries the name of its era: first came red-and-white Kōhaku, followed in the Taishō period by three-colored Taishō Sanshoku, then the bold black-ground Shōwa Sanshoku in the Shōwa years, and finally the postwar gleam of solid metallic Ogon gold. Ripples spread gently beneath the arched wooden bridge where moss-covered stones and maple leaves frame the crystal water.

Landing enough koi on a base spin opens the Koi Pond respins, where fish merge up that exact historical ladder—from white carp to Kōhaku, Taishō Sanshoku, Shōwa Sanshoku, and Golden koi—with each higher tier awarding its own fixed merge bonus straight onto the newly formed fish as it climbs. Every glide of crimson and gold scales beneath the water lilies brings serene harmony to the timeless courtyard pond.

Unlike aquarium fish viewed through glass from the side, nishikigoi are bred exclusively to be admired from above at the edge of a garden pool. A connoisseur standing by the water reads the fish’s broad back like an unrolled scroll painting, judging the balance of crimson and ink black against the ripples. Ripples spread gently beneath the arched wooden bridge where moss-covered stones and maple leaves frame the crystal water.

Accordingly, this grid looks straight down into a tranquil garden pond framed by water lilies, mossy stones, arched wooden bridges, and bamboo shishi-odoshi. On every respin, koi attempt to swim into neighboring cells; whenever two of the same breed meet, they merge into the next rank and can trigger chain merges across adjacent fish. Every glide of crimson and gold scales beneath the water lilies brings serene harmony to the timeless courtyard pond.

When two gleaming Golden koi meet in the same square during the respins, the water erupts as the legendary Lord of Golden Scales leaps high into the air. Its arrival awards the top Pond Lord bonus and sends a golden splash across the surface that instantly places a koi into every remaining empty cell. Ripples spread gently beneath the arched wooden bridge where moss-covered stones and maple leaves frame the crystal water.

With the entire pond now filled from edge to edge with brocade carp, the final settlement spin multiplies the combined value of every fish by both the Lord of Golden Scales multiplier and the Full Pond multiplier, turning a quiet mountain pool into a shimmering sea of living gold. Every glide of crimson and gold scales beneath the water lilies brings serene harmony to the timeless courtyard pond.