In the video, a person is seen holding a small fish in their hand. The fish is then released into a fish tank, where it swims around and interacts with other fish. The tank is filled with water and has a filter in the center. The fish are of different sizes and colors, and they swim around the tank, occasionally coming up to the surface. The person's hand is visible as they hold the fish before releasing it, and the fish swims away from the hand and into the tank.