The video shows a close-up of a fish tank with a variety of fish swimming around. The tank is filled with water and has a bed of small rocks at the bottom. There are several plants in the tank, including some with long, thin leaves and others with broader leaves. The fish are of different sizes and colors, and they are swimming in and out of the plants and rocks. The lighting in the tank is bright, and the water is clear, allowing for a good view of the fish and their surroundings.