The video shows a close-up of a fish tank with several yellow fish swimming around. The fish are of different sizes and are seen swimming in different directions. The tank appears to be well-maintained with clear water and no visible debris. The fish are active and seem to be healthy. The tank is likely located indoors as there is no natural light or outdoor scenery visible. The fish are the main focus of the video, and there are no other objects or creatures present in the tank.