How do Lake Erie Walleye respond to varying levels of visibility? That question is the focus of a study recently featured in The Environmental Monitor. Suzanne Gray, assistant professor in the School of Environment and Natural Resources, with funding from Ohio Sea Grant, is conducting a number of behavioral experiments to test how well two fish species, Walleye and Emerald Shiners see prey and predators under different levels of turbidity. Both of these species of fish are dependent on their vision to find food and avoid prey and how well they adapt to varying levels of visibility may have implications for Lake Erie fisheries.