Several koi fish swim in dark water. Some fish are light-colored with white, pale grey, and orange markings, while others are dark-colored, appearing black or very dark grey. Several fish gather at the surface, with their mouths open, creating small ripples and bubbles as they appear to feed or breathe. One light-colored fish with distinct orange and white patches has a long, flowing tail. A bright light source or reflection is visible on the water's surface in the upper right quadrant of the frame.