The video shows a large fish swimming in a tank. The fish is mostly gray in color, with a white underbelly and a black stripe running down the side of its body. It has a large mouth and sharp teeth, which it opens and closes as it swims. The fish's fins are spread out, and it moves its tail fin to propel itself through the water. The tank appears to be made of clear glass, and there are some orange objects floating on the surface of the water.