The video shows a fish tank with a group of small fish swimming around. The fish are brightly colored, with some having blue and orange stripes, while others are solid blue. The tank is decorated with green plants and has a bed of small, multicolored pebbles on the bottom. The water is clear, and bubbles can be seen rising to the surface. The fish move freely, sometimes swimming in groups and other times alone. The lighting in the tank highlights the vibrant colors of the fish and the plants.