The video shows a group of crayfish in a tank with a net. The crayfish are moving around the net, and some of them are climbing on it. The net is white and appears to be made of a thin, mesh-like material. The crayfish are blue and have long antennae and claws. The tank is filled with small, dark-colored rocks. The water in the tank is clear, and there are no other objects or creatures visible.