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Contact: A'ndrea Elyse Messer
Penn State

John Freedman, Penn State

Caption: Jonathan Freedman, shown here untangling a fish from a trap net, developed an electrified benthic trawl to sample bottom fish assemblages at dredged and undredged sites in the deep river pools.

Credit: Jonathan Freedman

Usage Restrictions: Non commercial use only

Related news release: Research shows river dredging reduced fish numbers, diversity

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