Ohio wildlife officials and researchers are testing the waters of an eastern Ohio river for the invasive Asian carp.
So far, there aren't any signs of the voracious fish in the Muskingum River.
But it has been found in the Ohio River near Portsmouth. That's about 100 miles from where the Ohio and Muskingum rivers meet.
The researchers tell The Columbus Dispatch that it will take months to figure out whether the Asian carp might be in the river.
State officials say the tests also will help them plan how to cut off paths that the carp could use to get into Lake Erie.
There's a big concern that the Asian carp could wreck the lake's sport fishing industry.