Tons, Tons, Tons,........... they're all over the North Shore of Nipissing right now....just getting off spawn and on their way out back to deep water.... you can catch them all you want at the Government Dock in Sturgeon and all down the Sturgeon River... buckets full.
I've caught them in the winter while fishing deeper 40+ feet ... and can often be caught in the Walleye holes come fall...
Actually you should be able to get them in The Little Sturgeon River and Laronde Creek.
Randy From Sturgeon