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Trout

Fast Facts
  • Turangi is known as the trout-fishing capital of the world!
     

  • In Taupō and its tributaries:

    • Approximately 90% are Rainbow Trout, introduced to NZ in 1898 and generally live for 3-4 years.

    • Approximately 10% are Brown Trout, introduced in 1887 and generally live longer than 4 years.

  • Brown trout are opportunistic carnivores and eat anything, including mice and rats!
     

  • Rainbow trout eat more and grow faster than brown trout. In rivers they feed in fast water, using energy to stay in the same place while feeding on drifting invertebrates. In lakes, rainbows tend to live in deeper water than brown trout and often feed on different prey – usually small fish, such as smelt in Lake Taupō.
     

  • Life cycle of trout

    • Several hundred to several thousand eggs are laid in a small hole by the female and fertilised by the male.

    • After 1–3 months the eggs hatch into alevins (fry with yolk sacs attached). These live in the gravel, feeding from their yolk sac.

    • They then emerge as fry, about 25 millimetres long. By late summer they have reached 50–70 millimetres.

    • As juveniles and spawning adults they live in streams, where they are exposed to predators on the banks.

    • Adults usually run upstream from a lake to spawn in late winter and early spring, in headwater streams with gravel beds. Not all rainbow trout survive spawning.

    • Much of the central North Island winter fishing is centred on rainbow trout running upstream from Lake Taupō to spawn in its tributaries.

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