The video shows a fish tank with a red bottom and a green plant in the corner. There are two fish in the tank, one with a green body and the other with a white body. The fish with the green body is swimming around the tank, while the white fish is swimming in the opposite direction. The fish with the green body approaches the white fish and seems to be chasing it. The water is clear, and the lighting is bright, making the colors of the fish and the plant stand out.