In the video, a person is seen holding a small plastic container filled with water and several fish. The container is then placed into a larger fish tank. The person then uses a net to scoop up the fish from the container and transfer them into the tank. The fish are small and appear to be of the same species. The tank is already filled with water and has some plants and rocks. The person's movements are careful and precise, ensuring that the fish are not harmed during the transfer process. The video ends with the fish swimming freely in the tank.