Step 1

Combine the lime, lemon, and orange juice in a medium mixing bowl. Reserve ½ cup of the juice mixture and set aside.

Step 2

Cut the shrimp into ½-inch pieces and stir into the juice mixture, pushing down the shrimp so it is covered in the juice. Cover and refrigerate for at least 30 minutes, stirring occasionally, or until the shrimp turns pink and opaque. Strain, discarding the liquid.

Step 3

Return the shrimp to the same mixing bowl. Stir in the tomatoes, onion, cilantro, jalapeno, salt, and reserved ½ cup juice mixture. Cover and refrigerate for 30 minutes or up to 4 hours, stirring occasionally. Gently stir in the avocado just before serving. Serve with tortilla chips.