The video shows a fish swimming in a tank. The fish is black and white in color and has a long body. It is swimming near the bottom of the tank, which is covered in rocks and plants. The water is clear and there are small bubbles visible on the surface. The fish appears to be alone in the tank and there are no other fish or creatures visible. The fish moves slowly and gracefully, and its fins and tail are clearly visible as it swims. The lighting in the tank is bright, illuminating the fish and the surrounding environment.