From then until the 1990s, pipis were primarily used by Europeans as bait in South Australia, and it was not until Italian immigrants introduced "" into restaurants in the 1990s that prices increased to the point of becoming viable for commercial fishing. In 2004, regulations regarding human consumption were included into the "Fisheries Act 1982", and 32 licences to harvest unlimited quantities were offered at each. Subsequently, imported Asian clam species have largely replaced "P. deltoides" as bait due to the lower cost.