The video shows a large aquarium with a variety of fish swimming around. The fish are of different sizes and colors, and they are swimming in different directions. The aquarium is filled with water and has a blue gravel bottom. There are also some decorations and plants in the aquarium. The fish are moving around, some are swimming near the top of the tank while others are near the bottom. The lighting in the aquarium is bright, making the colors of the fish stand out.