The video shows a group of fish swimming in an aquarium. The fish are white and have a streamlined shape, with a few of them having a slight pinkish hue. They are swimming around a bed of small, multi-colored pebbles that cover the bottom of the tank. The water is clear, and the background is a solid blue color, providing a stark contrast to the fish and pebbles. There are no visible plants or decorations in the tank, and the fish are the main focus of the video.