In the video, a person is seen petting a large fish in an aquarium. The fish is dark grey in color and has a smooth texture. The person's hand is visible, and they are wearing a green wristband. The aquarium is filled with water and has a sandy bottom. There are several small yellow fish swimming around in the background. The person's hand moves slowly along the side of the fish, and the fish seems to be enjoying the attention, as it does not swim away.