Place fish, quartered onion, and bay leaf on large piece of aluminum foil.
Securely close foil.
Place fish in steamer; steam 25 minutes or until fish flakes easily.
Heat oil in deep skillet.
Add garlic and chopped onion; saute until tender.
Add tomatoes, paprika, cayenne, chives, and wine.
Simmer 30 minutes.
Place fish on serving platter; top with tomato sauce.