Females have slimmer blue-green claws that never show any red. They are farmed in purpose built earthen ponds containing freshwater from underground supply, creeks, streams or dams. They thrive in the warmer waters of Central to Northern Queensland, and although redclaw can tolerate environmental extremes, commercial growth rates can only be sustained where water quality is high. C. Central Queensland Crayfish 29 ponds covering 5 hectares Breeding occurs predominately between September and April although in the farm situation almost continuous breeding can be stimulated. Techniques for breeding and juvenile production vary between farms but generally selected broodstock are placed in special breeder ponds where mating naturally occurs.
Eggs change colour through the incubation period.
Most females carry from 300 to 800 eggs per brood and can do this several times during the breeding season. The eggs are attached to the swimming legs beneath the tail of the female. Hatchlings stay with their mother for a few weeks becoming progressively more independent of her. Juveniles are harvested at about 10 grams and sorted for size and sex. Juvenile production may take from 3 to 4 months.