Chop 1 bunch green onions, and combine with next 4 ingredients in a shallow dish. Add the fish, and marinate 3 hours in the refrigerator, turning occasionally.
Trim remaining bunch of green onions, and place in a baking dish. Discard marinade; wipe fillets, and place atop green onions in dish. Bake at 400° for 10 to 15 minutes or until the fish starts to flake.