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In 2018, scientists began removing about 285,000 fish from Wisconsin's McDermott Lake; 4 years later yellow perch were up 788%, but walleye recruitment was still zero - The Times of India
Scientists removed about 285,000 warm-water fish from a Wisconsin lake over four years in an attempt to help its declining walleye population recover. The large-scale experiment reduced several fish species and was followed by a sharp rise in yellow perch.
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Scientists removed just 20–40% of fish from a degraded Chinese lake; underwater plants and water clarity began recovering | - The Times of India
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