Fishing for 31 of these species is managed under the
Quota Management System.
Shellfish species form an integral part of complex and diverse
ecosystems that support
biodiversity and ecological production in salt water habitats.
The Fisheries Act 1996 provides for the management of aquatic life in all New Zealand waters, which include inland waters, estuaries, and the sea. Shellfish species have customary value as
taonga, and recreational and commercial value, as well as intrinsic value as part of the broader
ecosystem.
Shellfish species are managed for customary Maori purposes, recreational and commercial fishing, aquaculture, aquatic life transfers, education, research and enhancement.