I would not say that the walleyes at bass pro shop are kept very successfully either, they are in horrible shape.
There is one fellow on here that had one, you might be able to find a couple threads if you look back. He said that Walleyes are a very very boring fish, they just rest around in the day and are more active in the dark.
I would think that they are a very boring aquarium fish to keep. I keep yellow perch which act similar to them but more active and i even find them boring.