The video shows a group of fish swimming in a body of water at night. The fish are of various sizes and colors, and they are moving around in the water. The water is dark, but there are some light reflections on the surface, making it possible to see the fish. The fish are swimming in different directions, and some are closer to the camera while others are further away. There is no visible land or other objects in the water, and the focus is solely on the fish and their movements.