Sauger are typically smaller than walleye and have round spots on their dorsal fin where Walleye do not. There are some other differences with the Walleye, like a solid black area at the back of their dorsal fin. We have always looked at them as a bonus fish and never really figured out a best way to target them. Generally while targeting Walleye there are plenty of Saugers around. Saugers do not seem to enter the river, and spawn on the lake about a week or two later than the Walleye. Feeding patterns seem to be the same as Walleye and generally there are more Sauger caught when we are fishing deeper on the lake in the winter.