In the video, a person is holding a light stick in front of a fish tank. The light stick is glowing and changing colors. The person is wearing a black shirt with a skull on it. The fish tank is filled with water and has various fish swimming around. The person moves the light stick around in front of the fish tank, creating a colorful light show. The fish seem to be enjoying the light show, swimming around and exploring the different colors. The person continues to move the light stick around, changing the colors and creating a mesmerizing effect. The fish tank is well-lit and the water is clear, allowing for a good view of the fish and the light show. Overall, the video captures a peaceful and mesmerizing moment of a person interacting with their fish tank using a light stick.