Brodet (Croatian Fish Stew)

Ingredients

• 1 cup packed parsley leaves
• 1⁄2 cup olive oil, plus more
• 1⁄4 cup fresh lemon juice
• 14 cloves garlic, thinly sliced
• Kosher salt
• freshly ground black pepper
• 1 lb. skinless monkfish fillets, pin bones removed
• 1 lb. skinless sea bass fillets, pin bones removed
• 10 oz. raw medium shrimp, peeled and deveined, tails removed
• 6 raw, unpeeled langoustines (optional), heads on
• 1 lb. Yukon gold potatoes, peeled and thinly sliced
• 2 small leeks, white and light green parts only, halved and thinly sliced
• 1 large red onion, thinly sliced
• 1 large yellow onion, thinly sliced
• 1 cup dry white wine
• 1 (28-oz.) can whole peeled tomatoes, crushed by hand