In a stock pot or Dutch oven, heat oil. Saute onion & garlic until translucent but not brown. Add next ELEVEN ingredients; stir together. Cover & simmer for about 20 minutes.
Add fish pieces, salt & pepper; stir gently, cover & cook for 5 minutes. Add scallops & clams, cover & cook for 5 minutes until scallops are opaque. Discard bay leaves. Serve.