Flounder with shrimp

1 tablespoon olive oil 2 tablespoons butter 1 small onion , chopped fine 2 garlic cloves , minced 2 stalks celery , chopped fine 1/2 red bell pepper , chopped[...]

2 (6 ounce) flounder fillets 1 teaspoon lemon juice 1 tablespoon dry white wine 1 1/2 cups water 1/2 lb unpeeled small shrimp 2 tablespoons butter or 2[...]