Combine undrained tomatoes, green onions, celery, lemon juice, and oregano in a large skillet. Bring to boiling; reduce heat. Simmer, uncovered, about 15 minutes or until most of the liquid has evaporated.
Spray a 2 quart rectangular baking dish with cooking spray.
Place fish in baking dish, turning under any thin edges.
Sprinkle with the pepper and coriander.
Bake for 8 to 10 minutes or until fish flakes easily with a fork.