The video shows a fish swimming in a tank. The fish is seen moving around the tank, and the camera follows its movements. The tank appears to be well-lit, and the water is clear. The fish is of a medium size and has a sleek body with a shiny appearance. The tank seems to be a home aquarium, and there are no other fish visible in the video. The fish moves gracefully, and its fins and tail are clearly visible as it swims. The camera angle changes throughout the video, providing different perspectives of the fish and its surroundings.