Rockport Fish Chowder

2 Tbsp vegetable oil
1/4 C onion, coarsely chopped
1/2 C celery, coarsely chopped
1 C carrots, sliced
2 C potatoes, raw, peeled, cubed
1/4 tsp thyme
1/2 tsp paprika
2 C bottled clam juice
8 whole peppercorns
1 bay leaf
1 lb fresh or frozen (and thawed) cod or haddock fillets, cut into
3/4–inch cubes
1/4 C flour
3 C lowfat milk
1 Tbsp fresh parsley, chopped