A koi pond is a water garden that features colorful koi fish, which are a type of ornamental carp. These ponds are often designed to enhance the beauty of gardens and landscapes, providing a serene environment for both fish and people. Koi ponds can vary in size and depth, and they typically include features like rocks, plants, and filtration systems to maintain water quality. To create a healthy habitat for koi, the pond must have clean, well-oxygenated water and adequate space for the fish to swim. Many enthusiasts enjoy feeding and caring for their koi, which can live for decades and grow quite large. Proper maintenance is essential for the longevity of both the fish and the pond ecosystem.