Kōrero: Whitebait and whitebaiting

Īnanga life cycle

Īnanga life cycle

Īnanga usually live for one year.

In autumn, adult females release their eggs among vegetation around the high-water mark on a very high (spring) tide. Males release milt (sperm) to fertilise the eggs. When the tide recedes, the eggs are exposed to the air for a number of weeks but remain moist among the vegetation.

When another spring tide reaches the eggs, larvae hatch. The falling tide then carries them out to sea.

The hatchlings spend the winter at sea, feeding on small crustaceans.

In the springtime, juvenile īnanga make their way upriver. This is the whitebait stage. Those that reach fresh water remain there as adults for spring and summer.

In autumn, the adult fish make their way downstream to spawn in estuaries.

Te whakamahi i tēnei tūemi

Te Ara - The Encyclopedia of New Zealand
Artwork by Bruce Mahalski

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Te tuhi tohutoro mō tēnei whārangi:

Carl Walrond, 'Whitebait and whitebaiting - Whitebait in New Zealand', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/diagram/11692/inanga-life-cycle (accessed 24 February 2020)

He kōrero nā Carl Walrond, i tāngia i te 24 Sep 2007