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Story: Water quality

Using silver carp

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Using silver carp

Silver carp can greatly reduce water weeds. In Lake Ōrākai, Hawke’s Bay, there is a marked difference where silver carp have kept the lake clear of phytoplankton – to the left of the barrier.

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NIWA – National Institute of Water and Atmospheric Research

Reference: A. D. Carruthers, Effect of silver carp on blue-green algal blooms in Lake Orakai. Napier: N. Z. Ministry of Agriculture and Fisheries, 1986, p. 19

by A. D. Carruthers

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How to cite this page

Mike Scarsbrook and Kit Rutherford, Water quality – Management of water quality, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/15539/using-silver-carp (accessed 4 June 2026).

Story by Mike Scarsbrook and Kit Rutherford, published 1 March 2009, updated 18 July 2016.