"Courtesy and respectful behaviour on the waterways helps our local fishing enthusiasts enjoy their fishing," DoC supervisor biodiversity ranger Eddie Te Huia said.
Illegal whitebaiting carries a maximum fine of $5000, and whitebaiting equipment can be seized.
Whitebait nets must have a mouth no larger than 4.5 metres (measured around the inside of the net frame) and framing material no wider than 120 millimetres.
Drag nets must be no taller than 1m in height and be flat when laid on a flat surface. Both whitebait nets and dragnets must be no more than 3.5m in length.
No fishing gear must exceed more than one-third of the water channel width, be used in conjunction with another person's gear to exceed more than one-third of the channel width or exceed 6m in total length.
Whitebaiters must use only one net at a time, remain within 10m of it and remove all fishing gear from the water at the end of the day.
As well as not fishing for whitebait within 20m of any tide gate, floodgate, confluence or culvert, they must not fish from any bridge or vessel.
Pamphlets with the regulations are at DoC offices and sporting shops and on DoC's website: http://www.doc.govt.nz/parks-and-recreation/things-to-do/fishing/whitebaiting/whitebait-regulations-all-nz-except-west-coast/