The video shows a large fish tank with several fish swimming around. The fish are of different sizes and colors, including a large white fish with a purple stripe, a smaller yellow fish, and a blue fish with red fins. The tank is filled with small pebbles and has a large rock formation in the center. The fish are swimming around the tank, some near the surface and others near the bottom. The water is clear, and the lighting in the tank highlights the colors of the fish.