Heat olive oil in a large pot over medium heat.
Sauté the onion, celery, and garlic until softened and fragrant.
Pour in the seafood broth and bring it to a gentle simmer.
Add the carrots and cook for 5–7 minutes until slightly tender.
Stir in the shrimp and fish pieces, then simmer for 5–7 minutes until the seafood is fully cooked.
Season with salt, black pepper, and fresh herbs to taste.
Serve hot with a squeeze of fresh lemon juice and garnish with chopped parsley if desired.