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BIGHEAD CARP
In 2009, Illinois treated a six-mile canal with more than 1,800 gallons of fish-killing poison — and found just one invasive carp- In 1970s, silver carp were brought to the US for aquaculture. Now the jumping fish threaten a $20 billion Great Lakes industry
- In the 1970s, the US introduced four carp species to control weeds; decades later, these carp spread as far as Minnesota, threatening native fish
- Worries over racism, waterways inspire push to rename fish15 Jul, 2021, 01.41 PM IST
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