It is listed as a vulnerable species of crayfish by the World Conservation Union ( IUCN ) , though the validity of this listing is questionable ; wild yabby populations remain strong , and have expanded into new habitats created by reservoirs and farm dams .
It is listed as a vulnerable species of crayfish by the World Conservation Union ( IUCN ) . But wild yabby populations remain strong , and have expanded into new habitats created by reservoirs and farm dams .