Several colorful koi fish are swimming gracefully in a dark pond. The video captures four main koi, with various patterns of red, white, black, yellow, and orange. One prominent red and white koi with black markings is seen near the top, while another yellow and orange patterned koi is in the foreground. A third, mostly white with red and orange spots, swims horizontally across the mid-ground. Another darker koi with yellow and black patches is visible under the red and white one. Small white specks, possibly food particles or light reflections, are scattered on the water's surface. The water reflects ambient light and shadows, indicating an outdoor or well-lit indoor setting. No text is visible in the video. The scene takes place in บ้านกาญจน์กนก 23, Thailand.