The Good News Network reported
Through a combination of invasive species control and stocking with captive-raised fish, it’s now believed that a self-sustaining and harvestable population of lake trout has returned to Lake Champlain.
Stocking began back in 1972, but controlling sea lamprey started 18 years later. Sea lamprey is an invasive parasitic species.
Read more After 50 Years, Trout Population Is Restored to Historic Numbers in One of the Largest Lakes in US
Natural History Wanderings 
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