Limpopo has lost 34 rhinos to illegal killings, KwaZulu-Natal lost 25 and the North West lost 24 rhinos.
According to the South African National Parks (SANParks), of the 161 arrests made, 138 of the arrested were poachers, 10 were receivers or couriers, six couriers or buyers and seven were exporters.
Last week, the SANParks said they were intending to involve other countries in curbing poaching of the rhinos.
Members of the South African National Defence Force working in conjunction with other law enforcement agencies, have been deployed to various borders and a crime line has been established to improve the level of cooperation with the public as well as make access for would-be informers much easier.