File:Whitebaiter on the Hutt River.JPG
New Zealand whitebait are the juveniles of five galaxiid species which live as adults in freshwater rivers and streams.[{{cite book|last1=McDowall|first1=R.M.|title=The New Zealand Whitebait Book|date=1984|publisher=Reed|location=Wellington, New Zealand|isbn=0-589-01533-8}}] Four of these five species have been classified by the Department of Conservation as endangered.[{{Cite news|url=https://www.nzherald.co.nz/the-country/news/article.cfm?c_id=16&objectid=12111436|title=Forest & Bird: Four of five whitebait species endangered|last=Beckman|first=Sadie|date=22 August 2018|work=The New Zealand Herald|access-date=21 July 2019}}][{{Cite journal|last1=Goodman|first1=Jane M.|last2=Allibone|first2=Richard M.|last3=Closs|first3=Gerard P.|last4=Crow|first4=Shannan K.|last5=David|first5=Bruno O.|last6=Dunn|first6=Nicholas R.|last7=Griffiths|first7=Marc|last8=Jack|first8=Daniel C.|last9=Ling|first9=Nicholas|date=2017-01-01|title=Conservation status of New Zealand freshwater fishes|journal=New Zealand Threat Classification System|volume=24|pages=1–15}}] The whitebait are caught during their migration into freshwater habitats after their larval stage at sea. They are much smaller than Chinese or British whitebait, averaging 45–55 mm in length, and are around 15–22 weeks old.[{{cite journal|last1=McDowall|first1=R.M.|last2=Mitchell|first2=C.P.|last3=Brothers|first3=E.B.|title=Age at migration from the sea of juvenile galaxias in New Zealand (Pisces, Galaxiidae)|journal=Bulletin of Marine Science|date=1994|volume=54|issue=2|url=http://www.ingentaconnect.com/content/umrsmas/bullmar/1994/00000054/00000002/art00004?crawler=true}}]
File:Okarito Whitebait MRD.webm, West Coast, New Zealand]]
The most common whitebait species in New Zealand is the common galaxias or inanga, which lays its eggs during the very high spring tides in autumn amongst bankside grasses that are flooded by the tide. The eggs develop out of the water until inundated by the next spring tide which stimulates the eggs to hatch. The larvae are then carried to sea on the outgoing tide where they join the ocean's plankton. After approximately six months, the juvenile fish migrate back into freshwater habitats where they mature to adulthood. The four other galaxiid species in New Zealand whitebait are the kōaro, banded kōkopu, giant kōkopu and shortjaw kōkopu.[[http://www.TeAra.govt.nz/en/whitebait-and-whitebaiting/1 Whitebait and whitebaiting – Whitebait in New Zealand] Carl Walrond in Te Ara – the Encyclopedia of New Zealand. Updated 1 March 2009. Retrieved 30 November 2011.] These species also spawn in bankside vegetation, but their spawning is triggered by autumn floods rather than tides.
New Zealand whitebait are caught in the lower reaches of the rivers using large, open-mouthed, hand-held scoop nets, long sock nets, or rigid, typically wedge-shaped set nets. Whitebaiters must constantly attend the nets in order to lift them as soon as a shoal enters the net; otherwise the whitebait quickly swim back out of the net. Whitebaiters may fish from platforms known as 'stands', which may include screens to direct the fish and systems for raising and lowering nets.
Whitebaiting in New Zealand is a seasonal activity with a legally fixed and limited period[{{cite web|title=Department of Conservation whitebait regulations|url=https://www.doc.govt.nz/parks-and-recreation/things-to-do/fishing/whitebaiting/}}] which spans part of the annual migration. The timing of the allowed fishing season is set to target the more common inanga, while avoiding the less common species that mainly migrate before and after the whitebaiting season. There is strict control over net sizes and rules against blocking the river or channelling the fish into the net; these measures allow some fish to reach the adult habitats. The whitebait themselves are very sensitive to objects in the river and are adept at dodging the nets.
File:Whitebait Fritter.JPG
Whitebait is a traditional food for Māori, and was widely eaten by European settlers in the 19th century. By the 20th century, the price of whitebait rose and it became known as a delicacy.[{{cite Q|Q114871191|pp=48-53}}] Currently, it commands high prices to the extent that it is the most expensive fish on the market, when available. The wholesale price (NZD) is typically {{Convert|60-70|$/kg}}, but the retail price can be up to {{Convert|140|$/kg}}.[{{Cite web|last=Taunton|first=Esther|date=2020-09-25|title=$140 a kilogram: Whitebait back to 'gold-plated' prices|url=https://www.stuff.co.nz/business/122878457/140-a-kilogram-whitebait-back-to-goldplated-prices|access-date=2021-03-16|website=Stuff|language=en}}] It is normally sold fresh in small quantities, although some are frozen to extend the sale period. Nevertheless, whitebait can normally only be purchased during or close after the netting season. The most popular way of cooking whitebait in New Zealand is the whitebait fritter, which is essentially an omelette containing whitebait. Purists use only the egg white in order to minimise interfering with the taste of the bait.{{Citation needed|date=January 2017}}
The degradation of waterways through forest clearance, and the impacts of agriculture and urbanisation, have caused the whitebait catch to decline.[{{cite book|last1=Richardson|first1=J.|last2=Taylor|first2=M.J.|title=A guide to restoring inanga habitat. NIWA Science and Technology Series No. 50|date=2002|publisher=NIWA|location=Wellington|isbn=978-0-478-23255-4|url=https://www.niwa.co.nz/sites/niwa.co.nz/files/a_guide_to_restoring_inanga_habitat.pdf}}] The loss of suitable spawning habitat has been particularly severe, especially for inanga, which rely on dense riparian vegetation lining the tidal portions of waterways. Amongst other factors, a lack of shade over waterways has been shown to kill developing whitebait eggs.[{{cite journal|last1=Hickford|first1=Michael|last2=Schiel|first2=David|title=Synergistic interactions within disturbed habitats between temperature, relative humidity and UVB radiation on egg survival in a diadromous fish|journal=PLOS ONE|date=2011|volume=6|issue=9|page=e24318|doi=10.1371/journal.pone.0024318|pmid=21931680|pmc=3169581|bibcode=2011PLoSO...624318H|doi-access=free}}]