The video shows a group of fish swimming in a body of water. The fish are of different sizes and colors, with some having yellow and black stripes, while others are blue and white. They are swimming around a rocky bottom, which is covered in small pebbles and rocks. The water is clear, and the fish are moving in different directions, some swimming towards the camera and others away from it. The fish appear to be healthy and active, and the water is clean and well-lit.