In the video, a person is seen cutting open the mouth of a fish. The person uses a knife to make an incision in the fish's mouth, and then proceeds to pull out the insides of the fish's mouth. The person's hands are visible in the video, and they are wearing a ring on their left hand. The fish is lying on a wooden surface, and the knife is silver in color. The person's actions are deliberate and careful, indicating that they are experienced in handling fish. The video provides a close-up view of the process, allowing the viewer to see the details of the fish's mouth and the person's hands.