Blue Crab Fishery
The Blue Crab fishery takes blue swimmer crabs. Other species may be landed and sold as by-products or used as personal bait. The blue crab fishery uses crab pots and bait nets. Most of the South Australian commercial catch is sold to Sydney and Melbourne markets. A management plan is in place for this fishery.
http://www.pir.sa.gov.au/fishing/commercial_fishing/fisheries/blue_crab_fishery
Also see Blue Crab Users guide
image: blue swimmer crab