Red Snapper Skewered Grilled Ceviche

Name: Red Snapper Skewered Grilled Ceviche
Ingredients: 1 cup fresh orange juice; 1 cup fresh lime juice; 1 cup fresh lemon juice; 1 cup canola oil; 2 red onions, quartered and each quarter cut in half; 1 orange peeled and sectioned; 1 lemon peeled and sectioned; 1 lime peeled and sectioned; 2 tablespoons chopped chives; 1/4 cup cilantro; 2 pounds red snapper, cut into 1-inch cubes; 16 long wooden skewers, soaked in water for 2 hours; 2 mangoes, cut into 1-inch cubes