The video shows a fish tank with several fish swimming around. The tank is filled with water and has a variety of green plants and rocks at the bottom. The fish are of different sizes and colors, and they are swimming in different directions. Some of the fish are near the surface of the water, while others are near the bottom. The plants are swaying slightly in the water, and the rocks are stationary. The lighting in the tank is bright, making the colors of the fish and plants stand out.