Halibut with Zucchini Salsa Verde

Name: Halibut with Zucchini Salsa Verde
Ingredients: 10 ounces zucchini (about 2 medium), trimmed, chopped; 1/2 cup chopped fresh cilantro plus leaves for garnish; 1/3 cup chopped white onion; 5 tablespoons fresh lime juice; 2 1/2 tablespoons chopped seeded jalapeño chiles; 1 1/4 teaspoons finely grated lime peel; 2 1/4 teaspoons coarse kosher salt, divided; Nonstick vegetable oil spray; 1 1/4 teaspoons freshly ground black pepper; 1 1/4 teaspoons ground coriander; 6 6-ounce skinless halibut fillets or cod fillets