Caldo de Mariscos is a popular soup in South Texas. Different types of fish and sometimes shrimp are added to the soup for variation. Adding vegetables makes it rich in vitamin C as well as fiber.
Heat the oil in a Dutch oven or large pot over medium heat. Sauté the onion until translucent, 5 to 6 minutes. Add the tomatoes, zucchini, and pepper and sauté until tender, about 5 minutes. Add the garlic and cumin and cook for about 1 more minute.
Add the cilantro, lime juice, spice blend, bay leaves, oregano, and salt along with 4 cups (960 ml) water and bri