In the video, a person is seen holding a fish in their hand and then releasing it into a fish tank. The fish tank is filled with a variety of fish, including goldfish and koi fish. The fish are swimming around in the tank, and the person continues to release more fish into the water. The fish are of different sizes and colors, including orange, white, and black. The tank is well-lit, and the water is clear, allowing for a good view of the fish. The person's hand is visible as they release the fish, and they seem to be doing so carefully to avoid harming the fish.