In the video, a person is seen holding their hand in a large tank filled with water and small fish. The fish are swimming around the person's hand, and the person is moving their hand around to interact with the fish. The fish are of various colors, including blue, red, and white. The person's hand is wet, and they appear to be enjoying the experience of interacting with the fish. The tank is large and appears to be indoors, with no other objects or people visible in the video.