The video shows a fish swimming in an aquarium. The fish is yellow with blue spots and is seen swimming around the tank. The tank is filled with water and has rocks and plants inside. The fish appears to be healthy and active, moving around the tank with ease. The lighting in the tank is bright, allowing for clear visibility of the fish and its surroundings. The water is clean and clear, with no visible debris or pollutants. The fish seems to be the only living creature in the tank, and there are no other fish or creatures visible. The tank appears to be well-maintained, with no algae or mold visible on the rocks or plants. Overall, the video provides a peaceful and calming view of a fish swimming in its aquarium.