Cucumbers - Peel and cut cucumbers. Remember, seedless cucumbers, although they call them seedless, have some seeds, I do a light scoop to remove any seeds, but it is NOT necessary. If you can't find a seedless cucumbers, You will need 2 large cucumbers, as they have a lot more seeds that you would need to take out. Just use a spoon to scrape out the seeds. Once the seeds are removed, cut into 1/4 half moons. I just lay them out on a paper towel to dry out. I don't worry about salting them.
Fish - Prepare the fish first by removing them from the refrigerator to take the chill off. In a small pie plate or dish, mix the flour, cayenne, paprika, salt and pepper and lightly dredge the fish. Set on a plate off to the side while you start your cucumbers. Both the cucumbers and the fish take just a few minutes, so make sure to have everything ready.
Cucumber Saute - In a medium saute pan, I prefer a non stick pan for this, medium high heat, melt the butter and and add in the shallots. Saute for 1 minute, Then add in the wine and cook another minute. Add in the cucumbers, capers and cook 2 minutes. Then reduce to medium low heat and add the sour cream, and season with salt, pepper and dill. Stir to combine to warm up the sour cream and transfer to a bowl and cover to keep warm.
Fish - Now in the same pan, just wipe it out and add 1-2 tablespoons butter and bring to medium high to high heat. Add the fish and cook 3-4 minutes per side until golden brown. They cook very quickly. The second side will usually cook much quicker. Now remember, cooking times will vary depending on the thickness of the fish.
Serve - Remember the half of lemon we didn't slice; squeeze a little lemon over each fillet and top with the warm cucumbers and garnish with a lemon slice. ENJOY!