1. Heat oil in a large (12-inch) deep skillet over medium heat. Add ginger and garlic, and cook 1 minute. Stir in broth and next 3 ingredients. Bring to a boil, reduce heat, and simmer 5 minutes.
2. Arrange fish and next 3 ingredients in broth. Cover and simmer 5 to 7 minutes or until fish is just flaky and vegetables are tender. Place fillets in shallow bowls; top evenly with broth mixture and vegetables. Garnish, if desired.