The video shows a fish tank with a variety of fish swimming around. The tank is decorated with rocks, plants, and a bubbler. The fish are of different sizes and colors, and they swim in and out of the frame. The bubbler creates a stream of bubbles that rise to the top of the tank, providing oxygen for the fish. The plants sway gently in the water, and the rocks provide hiding spots for the fish. The lighting in the tank highlights the vibrant colors of the fish and the plants.