PORTLAND, Ore. (AP) — Northwest officials are increasing efforts to restore runs of Columbia River lamprey, an ancient eel-like fish.
Lamprey-friendly ramps have been installed at the Bonneville Dam to help the poor swimmers, but few adult lampreys are using them. The number of lampreys has been in sharp decline since the late 1960s, and biologists aren’t sure why their numbers haven’t improved.
The Oregonian reports the fish have a tough time climbing fish ladders designed for salmon. Northwest tribes value lamprey for food, as well as medicinal and ceremonial uses.
Ramps have also been placed at Willamette Falls in Oregon City and at Three Mile Falls Dam on the Umatilla River to help lamprey.
