Erdine’s Fish Pie

1 cup cooked haddock, pollock, etc 1 flaked 2 tablespoon butter or margarine 2 tablespoon flour 1 cup milk, or milk and fish 1 water 1 teaspoon salt 1 cup cooked peas 1 tablespoon onion — grated 1 tablespoon green pepper — chopped 2 cup mashed potatoes — seasoned Steam or cook the fish in…