Ingredients
2 pounds cleaned, white-fleshed fillet (such as grouper), cubed into ½-inch pieces
4 cups freshly squeezed lime juice
2 small red onions, diced
¼ cup cilantro, chopped
¼ cup white vinegar
1 large red bell pepper, diced
Salt and black pepper to taste
Directions
In a bowl, combine all ingredients and mix to incorporate. Refrigerate for 30 to 45 minutes, until the fish is completely opaque. Adjust seasoning to taste.
Redux: Ceviche 
Eatymology of Ceviche 
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Scallop Ceviche 