The video shows a close-up of a fish swimming in an aquarium. The fish has a mix of orange and black colors on its body, with a white underbelly. It has long, flowing fins and a long, thin tail. The fish is seen swimming around the tank, which is filled with green plants. The background of the tank is black, and there is a green wall behind it. The fish moves gracefully through the water, occasionally brushing against the plants.