dark pond or large water feature containing several koi fish of varying colors, including orange and white

dark pond or large water feature containing several koi fish of varying colors, including orange and white. The water's surface reflects ambient light, obscuring the bottom of the pond. The camera angle is from above, offering a direct view into the water. The pond appears to be rectangular and bordered by dark edges, possibly made of stone or similar material. A drain is visible at the bottom of the pond. The fish are actively swimming, creating ripples on the water's surface.