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

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https://timesofindia.indiatimes.com/science/in-2018-scientists-began-removing-about-285000-fish-from-wisconsins-mcdermott-lake-4-years-later-yellow-perch-were-up-788-but-walleye-recruitment-was-still-zero/articleshow/133706721.cms

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.

Scientists removed just 20–40% of fish from a degraded Chinese lake; underwater plants and water clarity began recovering | - The Times of India

https://timesofindia.indiatimes.com/science/scientists-removed-just-2040-of-fish-from-a-degraded-chinese-lake-underwater-plants-and-water-clarity-began-recovering/articleshow/133755878.cms

In 2003, crews began removing non-native fish from the Grand Canyon; by 2006 rainbow trout’s share of the catch had fallen from about 90% to under 10% - The Times of India

https://timesofindia.indiatimes.com/science/in-2003-crews-began-removing-non-native-fish-from-the-grand-canyon-by-2006-rainbow-trouts-share-of-the-catch-had-fallen-from-about-90-to-under-10/articleshow/133727220.cms

Tasmania spent 28 years removing invasive carp from two lakes; after 49,301 fish were taken out, the state declared carp functionally eradicated and trout began bouncing back - The Times of India

https://timesofindia.indiatimes.com/science/tasmania-spent-28-years-removing-invasive-carp-from-two-lakes-after-49301-fish-were-taken-out-the-state-declared-carp-functionally-eradicated-and-trout-began-bouncing-back/articleshow/133384589.cms

In 2020, Ohio removed a dam from the once-polluted Cuyahoga River; it reopened 39 km of habitat, and scientists later detected 15 additional fish taxa - The Times of India

https://timesofindia.indiatimes.com/world/us/in-2020-ohio-removed-a-dam-from-the-once-polluted-cuyahoga-river-it-reopened-39-km-of-habitat-and-scientists-later-detected-15-additional-fish-taxa/articleshow/133742152.cms

Scientists added sulfuric acid weekly to an Ontario lake for 17 years, lowering pH from 6.8 to 5.2; decades later its lake trout population remains below half its former level - The Times of India

https://timesofindia.indiatimes.com/science/scientists-added-sulfuric-acid-weekly-to-an-ontario-lake-for-17-years-lowering-ph-from-6-8-to-5-2-decades-later-its-lake-trout-population-remains-below-half-its-former-level/articleshow/133676293.cms

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