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Story: Coarse fish

Gambusia

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Gambusia

Gambusia or mosquitofish have been introduced to many countries to combat mosquitoes – they eat the larvae and pupae. They were first released in New Zealand in the 1930s. In a number of countries they have become pests by competing with native fish, and in New Zealand they are classed as an ‘unwanted organism’ under the Biosecurity Act 1993.

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by Clint McCullough

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How to cite this page

Bob McDowall, Coarse fish – Livebearers, catfish and perch, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/15682/gambusia (accessed 11 June 2026).

Story by Bob McDowall, published 1 March 2009.