The video shows a blue fish swimming in a tank with a large rock. The fish is followed by a brown fish and then a yellow and white fish. The blue fish seems to be leading the way, while the other two follow closely behind. The tank is filled with sand, and the fish are swimming around and exploring their surroundings. The blue fish is the most vibrant and colorful of the three, while the brown and yellow and white fish are more subdued in color. The rock in the tank is large and dark, providing a contrast to the brightly colored fish. The fish move smoothly and gracefully through the water, creating a peaceful and calming scene.