Add the fish, garlic, shallot, and jalapeño, to a large glass or other non-reactive bowl. Pour in the orange, lemon, and lime juice, and season with salt and black pepper, to taste. Gently toss to combine, while ensuring that the fish is completely submerged in the juice.

Cover and place in the refrigerator for 30 minutes, then gently turn the mixture to ensure all ingredients are evenly distributed in the juice.

Cover and return to the refrigerator to continue marinating for another 15-30 minutes or until the fish is “cooked” through. Do not “overcook” or the fish may become mushy.

Remove from the refrigerator and add the bell pepper, avocado, and cilantro to the bowl. Gently toss to combine. Taste and season with additional salt and black pepper, if desired.

Spoon the ceviche onto the individual Bibb lettuce leaves with a slotted spoon to drain excess liquid right before serving. Enjoy!