Remove all bones and skin from the fish. Cut into ½ inch thick large slices first. Then score the top side lengthwise and crosswise, each ⅛ inch deep. Then cut into 1 inch square pieces. Put in a bowl and soak with salt, wine, and pepper about half a hour.
Heat oil in a pan. Fry all of the fish over high heat about 10 seconds. Remove the fish and drain.