Hudson River plan scrutinized, with some wanting fish barrier in attempts to keep round goby from New York’s Lake Champlain

The round goby is a small fish, growing to a maximum of 6 inches. But the problems it causes when it makes it has made its way into watersheds in North America belie its size, as it devastates native fish populations via its aggressive feeding and relentless reproduction.
A native of Europe, the round goby is in all of the Great Lakes and has been spreading through the Erie Canal/Mohawk River system in New York, but so far has been stopped from making its way into Lake Champlain, home to healthy lake trout, Atlantic salmon, and warmwater fish populations.

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