The video shows a large group of small, dark-colored fish swimming in a body of water. The fish are moving around in various directions, and their movements create ripples on the water's surface. The water appears to be shallow, as the bottom is visible and covered with rocks and debris. The fish are of the same species, and their size suggests they are young. There is no visible human activity or other types of fish in the video. The overall atmosphere is calm and serene, with the sound of water gently lapping against the rocks.