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
Directions
Combine zucchini, chopped cilantro, and next 4 ingredients in blender. Add 1 1/4 teaspoons coarse salt. Puree until salsa is smooth. do ahead Can be made 2 hours ahead. Transfer to small bowl. Cover; chill.
Preheat broiler. Line broiler pan with foil; coat foil with nonstick spray. Combine 1 1/4 teaspoons pepper, coriander, and remaining 1 teaspoon coarse salt in small bowl; stir to blend. Pat fish dry. Sprinkle fish on all sides with seasoning mixture.
Arrange fish on prepared pan. Broil until just opaque in center, 3 to 4 minutes per side, depending on thickness.
Transfer fish to plates. Spoon some salsa over. Garnish with cilantro leaves. Serve with remaining salsa.