1/4 c.extra-virgin olive oil
1 bulb fennel, chopped, fronds reserved
2 shallots, minced
2 garlic cloves, thinly sliced
1 tsp. dried oregano
1/2 tsp. red pepper flakes
Kosher salt
Freshly ground black pepper
1 1/2 c. dry white wine
1 (28-oz.) can crushed tomatoes
1 (8-oz.) bottle clam juice
2 c.water
2 dried bay leaves
1 2″-thick strip orange zest (optional)
1 dozen littleneck clams, scrubbed
1 dozen mussels, scrubbed
1 lb. shrimp, peeled and deveined
1 lb. halibut, skin removed and cut into 1″ pieces
1/4 c. freshly chopped parsley, for serving
Baguette, for serving
Lemon wedges, for serving