How to Make It
In a large bowl, toss the tomatoes with the Fresno and Serrano chiles, the scallions, cilantro, lime and lemon juice, honey and 2 teaspoons sea salt. Add the fish to the marinade and stir until coated. Cover and refrigerate the fish for at least 1 hour and up to 4 hours, stirring every 20 minutes, until the fish is soft and opaque but not falling apart. Season the ceviche with more salt if necessary.
On a microwave-safe plate, warm the tortillas at high power for 30 seconds, until soft and pliable. Arrange the avocado slices on the tortillas and top with the ceviche. Fold the tortilla over the filling and serve right away with lime wedges.