As many as 360 million carp clog Australian waterways in a “wet” year, researchers estimate.


That estimate drops to 200 million in an “average year”, according to scientists advising the National Carp Control Plan.


They have identified the destructive pest species’ biomass and density in an Australian-first study published in the Biological Conservation journal.


The research team collated data from 4,831 sites across a range of habitat types including rivers, lakes, wetlands and billabongs and used a model-based approach to estimate how many carp were in the waterways.
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