In the video, a person is seen holding a small fish in their hand and dropping it into a fish tank. The fish tank is filled with water, rocks, and plants. The fish swims around the tank, exploring its new environment. The person's hand is visible as they hold the fish, and the fish appears to be a small, colorful species. The tank is well-lit, and the water is clear, allowing for a good view of the fish and its surroundings.