Clean And Wash Fish; Season With Salt & Pepper, Squeeze The Juice Of The Lemon Over It, And Let It Stand For 1 Hour. Clean Onions-Slice Thinly; Rinse With Cold Water. Pour 1/2 Of The Oil Into A Pan. Spread Onions In Bottom; Sprinkle With Half The Parsley And Half The Garlic. Lay Fish On This And Sprinkle With Remaining Parsley And Garlic; Pour The Remaining Oil Over All, Then The Wine And Tomatoes (Or Diluted Paste). Bake In Preheated 350 F. Oven For 30 Min.