The video shows a group of fish swimming in an aquarium. The fish are of different colors and sizes, and they are moving around in the water. The aquarium is well-lit, and the fish are clearly visible. The water is clean and clear, and the fish are swimming freely. The fish are of different species, and they are all swimming in different directions. The aquarium is decorated with plants and rocks, and the fish are swimming around them. The fish are swimming at different depths in the water, and some are swimming near the surface while others are swimming near the bottom of the aquarium. The video is shot from a side angle, and the fish are swimming from left to right.