By directing the none-molting crustaceans to move into a predetermined area in a culture tank, the present invention discloses a multi-layered aquaculture system with shallow-water containers which is based upon the utilization of the methods and apparatus to eliminate their cannibalistic actions towards newly molted mates. This multi-layered aquaculture system for aquatic crustaceans comprises multi-layered containers for carrying the water body of culture and a means for generating an effect of bright and dark contrast at predetermined places within one or every afore-said containers. A means for arranging even water flow is further adapted to the containers with substantially no impact on the effect of the bright and dark contrast to take place at predetermined places.