10 ounces zucchini (about 2 medium), trimmed, chopped
1/2 cup chopped fresh cilantro
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
Combine all ingredients in blender. Add 1-1/4 teaspoons coarse salt. Puree until salsa is smooth. (Can be made 2 hours ahead. If making ahead, transfer to small bowl. Cover; chill.) Use as a condiment for grilled or broiled fish.