The video shows a fish swimming in a tank. The fish is moving around the tank, and the camera follows its movements. The fish appears to be a tropical species, with a colorful body and fins. The tank is well-lit, and the water is clear, allowing for a good view of the fish. The fish seems to be healthy and active, swimming around the tank with ease. The background of the tank is not visible, but the focus is on the fish and its movements.