On 12-6-14 my buddy Alex and I hit a new lake we've both wanted to ice. It is actually a river backwater but behaves a lot like a lake. We have fished it in the summer months but weren't sure of all the species in there, their population, depth, structure, etc. The unknowns were the reason we decided on this body of water. We wound up catching 5 species on the day and a lot of fish. The highlight of the day was when I caught my first Channel Catfish through the ice.
I think for the most part they are a tricky fish to catch in the Winter. Some rivers and backwaters will give them up and then the Horseshoe Chain near St. Cloud is well known for a winter Channel Cat bite.