The video shows a large lizard swimming in a tank of water. The lizard has a long tail and is moving slowly through the water. There are also several fish swimming around the lizard. The tank appears to be indoors, and there is a reflection of a person visible in the glass. The lizard's skin is a light brown color, and it has darker brown spots on its back. The fish are orange and white, and they are swimming in different directions. The water is clear, and the lighting in the room is bright, making the colors of the lizard and fish stand out.