The video shows a person's hand reaching into a fish tank and touching the fish. The fish are swimming around the tank, and the person's hand is moving slowly, allowing the fish to come close to it. The fish are of different sizes and colors, and they seem to be enjoying the interaction with the person's hand. The tank is filled with clear water, and the background is blue, which contrasts with the colorful fish. The person's hand is visible throughout the video, and the fish are constantly moving around it.