Peruvian Tiradito de Pescado

Name: Peruvian Tiradito de Pescado
Ingredients: 1 tablespoon yellow aji pepper paste (*see notes); 1/2 cup freshly squeezed lime juice; 2 tablespoons freshly squeezed lemon juice; 2 tablespoons freshly squeezed orange juice; 1 teaspoon minced cilantro leaves; 3 fresh ginger slices (1/8-inch thick); 1 garlic clove (peeled and lightly smashed); 1 pound very fresh white fish fillets about 1 1/2-inch thick (such as sea bass, mahi mahi, halibut, or flounder); fresh corn kernels (as garnish); 1 thin slice hot pepper (as garnish); 1 sprig cilantro (as garnish)