A koi pond is a water feature designed to house koi fish, which are colorful varieties of carp. These ponds can be found in gardens, parks, and private backyards, often featuring plants, rocks, and decorative elements to enhance their beauty. Koi ponds provide a serene environment for both the fish and their owners, promoting relaxation and enjoyment of nature. Maintaining a koi pond involves regular cleaning, water quality management, and feeding the fish. Proper filtration systems and aeration are essential to keep the water clear and healthy. Many enthusiasts also incorporate water plants and fountains to create a balanced ecosystem and improve the pond's aesthetic appeal.