Ohio Division of Wildlife fisheries biologists have tested fillets from Lake Erie walleye and yellow perch, declaring the fish safe to eat despite harmful algal blooms in those waters. The blue-green algae that has turned some waters around Western Lake Erie into a slimy, bright green soup again this year contains microcystin, a liver toxin. Only trace amounts are showing up in the flesh of the fish, said Inland Fisheries Program Administrator Scott Hale.