Heat oil in a large nonstick skillet over medium-high heat. Saut bell pepper, celery, onion, and thyme 5 minutes or until onion just begins to brown. Stir in tomato and next 3 ingredients. Bring to a boil; cover, reduce heat, and simmer 2 minutes.
Remove from heat. Stir in hot sauce.
Arrange fish in a single layer in a 13 x 9-inch baking dish coated with cooking spray.
Sprinkle with Creole seasoning, and top with vegetables.
Bake at 400 for 15 minutes or until fish flakes easily when tested with a fork.