When researchers and the media talk about Asian carp reaching the Great Lakes, they are typically referring to bighead and silver carp, the two voracious phytoplankton eaters that are wreaking havoc in places like the Mississippi and Illinois rivers. But the species most likely to establish in Lake Erie may actually be a third member of the Asian carp family: grass carp.
From The Voice:
“Grass carp are a different kind of fish and pose different kinds of risk than bighead and silver carp,” said Jeff Tyson, administrator of the Lake Erie Fisheries Program Administrator for the Ohio Department of Natural Resources. Tyson addressed a meeting of environmental writers at Ohio State University’s Stone Lab in Lake Erie on Aug. 18. “We know we have some grass carp in the system. Grass carp impact the system through their impacts on structure and vegetation. They consume huge amounts of vegetation.”
Grass carp could put Lake Erie at risk “by damaging habitats and damaging fish in communities given the documented reproduction of grass carp in large rivers,” according to the Ohio Asian Carp Tactical Plan, 2014-2020. “Grass carp can also decimate submersed aquatic vegetation that is critical to migrating waterfowl and other water birds.” Read more.
**Photo courtesy of Eric Engbretson, US Fish and Wildlife Service, Bugwood.org.