This video features a large fish swimming in an aquarium. The fish has a long body with a patterned skin and a tail that it uses to propel itself through the water. The aquarium is filled with colorful gravel and green plants, providing a natural habitat for the fish. The fish moves gracefully, exploring its surroundings and occasionally interacting with the plants. The lighting in the aquarium highlights the fish's scales and the vibrant colors of the gravel and plants.