Studies are underway to delineate stocks of lake herring and lake trout in Lake Superior and omul (similar to our lake herring) in Lake Baikal using a variety of multivariate methods. To meet our objectives we have developed a team of scientists from GLSC, the U.S. Fish and Wildlife Service, University of Wisconsin-Milwaukee, the University of Minnesota-Duluth, and the Buryat Institute of Biology, Ulan-Ude, Russia. The techniques we are using to delineate stocks include protein electrophoresis, trace elements in otolith, whole-body morphometrics, and intestinal parasites profiles. Results will be useful in developing stock-specific harvest strategies for these ecological and economically important fishes.