Pan fried trout in butter with almonds is simple and a classic. A sprinkle of chopped fresh parsley adds a nice finish. I would suggest an aged HUnter Semillon - all buttered toast and honey but dry, although they are a bit difficult to get in that style anymore.
On the same theme, butter, lemon juice and a bit of zest and fresh chopped dill is another simple classic. A Sav Blanc might be better there.
A dry crisp well chilled cider may work also.
But I have no idea really