You can help crayfish/koura

Koura/freshwater crayfish
Koura have a special part to play in our freshwater lakes and streams. They are native animals and recycle some of the leftover materials by their scavenging, therefore helping to clean up our streams and lakes in their own small way.
As they are so slow growing and many do not reach adulthood, there are never too many. It pays to take care of them and put the ones we catch back where we found them.
Fence off your waterways or ponds from stock and plant native vegetation along the edge of waters.
Contacts
DOC HOTline - 24 hour emergency number
Phone 0800 DOC HOTline (0800 362 468) to report:
Sick or injured wildlife
Whale or dolphin strandings