The video shows a fish tank with a green plant and a clear tube. The fish swims around the tank, and the camera follows its movements. The fish is yellow with a white belly and black stripes on its body. The water is clear, and the lighting is bright. The fish moves gracefully, and its fins are in constant motion. The plant is lush and green, providing a nice contrast to the fish's yellow color. The tube is transparent and appears to be empty.