The video shows a fish tank with a variety of fish swimming around. The tank is decorated with plants and rocks, and the fish are of different sizes and colors. The water is clear, and the lighting is bright, highlighting the vibrant colors of the fish and the greenery in the tank. The fish are seen swimming in different directions, some near the surface and others near the bottom of the tank. The plants sway gently with the water movement, and the rocks provide a natural habitat for the fish. Overall, the video captures the serene and lively environment of the fish tank.