1. Clean fish; cut into cubes. Chop chili after removing seed. Put fish in a large colander and pour boiling water over the pieces.
2. Shake fish well and put in another bowl;
3. Add onion, chili, fresh chilies, lemon juice, orange juice, salt, and pepper. Cover tightly and marinate 3 hours until fish is cooked (white not transparent).
4. Serve with lettuce leaves, corn ears, and sweet potatoes.