Remove any remaining bones from fish.Flake the fish. Combinevegetables and fish.Combine mayonnaise, mustard, lemon juice,vinegar, and seasonings; blend well. Add mayonnaise mixture to fishmixture; toss lightly.Chill.Serve on salad greens.Garnish withtomato wedges.Serves 6.(Adapted from a recipe in "Fish Recipes from the Great Lakes", Bureauof Commercial Fisheries, US Department of Interior)