The video shows a close-up of a fish tank with two crayfish inside. One crayfish is white, and the other is blue. The blue crayfish is seen moving around the tank, while the white crayfish is stationary. The tank is filled with black gravel, and there is a purple object in the background. The crayfish appear to be interacting with each other, and the blue crayfish seems to be more active than the white one.