The Ohio Lamprey is typically found in lakes, streams, and other bodies of water. However, many of these environments are often threatened by dams and other man-made confinements, along with mining and construction. Many of these cause change in water flow, which can highly affect the spawning of the Ohio Lamprey. It is vital for the Lamprey to have clean gravel, rocks, or riffles while reproducing, and the sudden increase in agricultural change has made it hard to find such conditions.
predators
The Ohio Lamprey is vulnerable to many larger predators (being an aquatic resident). Lamprey larvae are often eaten by other fish. The only predator to adult Lamprey are humans, although humans effect both larvae and adults in different ways. Another indirect predator of the Ohio Lamprey is the sea lamprey. These fish indirectly affect the Ohio Lamprey through their parasitic tendencies. Because these lamprey are so parasitic, there are many programs dedicated to decreasing their population. However, the feats taken to lower the numbers of this blood sucking fish, are also affecting the harmless kind, leaving them small numbered.