Classic Peruvian Ceviche: a Refreshing Seafood Delight

Name: Classic Peruvian Ceviche: a Refreshing Seafood Delight
Ingredients: 1 pound (450g) fresh white fish fillets (such as tilapia or sole), skin removed, cut into small cubes; 1 cup (240ml) fresh lime juice (about 8-10 limes); 1 small red onion, thinly sliced; 1-2 fresh jalapeño peppers, deseeded and finely chopped (adjust to taste); 1/2 cup (15g) fresh cilantro, chopped; Salt to taste; Black pepper to taste; 1 cup (150g) cooked sweet potato, cubed (optional); 1 cup (30g) corn kernels (fresh, frozen, or canned); Tortilla chips or plantain chips (for serving)