In this May 2017 photo provided by the Vermont Fish & Wildlife Department, fisheries staff release a 48-year old male sturgeon back into the Lamoille River in Milton, Vt., after it was captured in the tributary of Lake Champlain then weighed, measured and examined. Biologists first studied and tagged the sturgeon in 1998. It was recaptured several times between 1998 and 2002, and this year it was implanted an acoustic tag so its movements can be followed. (Vermont Fish & Wildlife Department via AP)
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