Somewhere here in 'What's Cooking?' is my Finnish fish chowder recipe or Kalamojakka. It has earned copious wilderness accolades and filled bellies on the past 8 years of trips since I came up with it. Best with lake trout, IMHO, but I had to settle for pike chowder on the last trip of this summer...still quite good, though. Do a search for the recipe here if interested.
Here's a couple of Walleye specific recipes (you could use other fish....but why?) that have pleased some palates. How do you make walleye even better - you wrap it in bacon, of course! Build a cooking fire bed of coals, then butter some heavy foil, lay down some of those pre-cooked bacon slices (I use 4 per two fillet, staggered and wrapped around), sprinkle on some Walleye Dust (Dockside Fish Market, Grand Marais) and bake on the coals.
The other is a pecan crusted walleye. I ran into this at the Boathouse Brewery and Pub in Ely - awesome!!! and danged if they didn't take it off the menu last year!

Mix finely chopped pecans, panko breading (equal amounts) and enough Walleye Dust to season perfectly. Dredge in an egg wash, roll in the mix and either bake in the oven or pan fry until crispy and golden.
One more treat is smoked lake trout. I have a Purcell Trench grill with the expanded mesh that I put the fillets on, position it on the fire pit in such a way that I can build a foil tent over it that funnels the smoke from a very small indirect fire fed with small sticks of alder that have been soaked in water to produce more smoke. It takes a good while, but the results are truly mouth watering. Salt or season, if you like before smoking. You could also brine them for a bit, but I have not done that out in the bush. Bone appetite (unless you're realty good with a fillet knife)!
pd