Crackling Fish Tacos with Chipotle Tartar Sauce

Name: Crackling Fish Tacos with Chipotle Tartar Sauce
Ingredients: 2 cloves garlic, finely chopped; 1 to 2 chipotles in adobo sauce seeds removed, finely chopped; 3/4 cup mayonnaise; 1 scallion, white and light green parts only, finely chopped; 1 tablespoon fresh lime juice; Salt; 2 pounds skinless red snapper fillets (or other firm, flaky white fish); 2 tablespoons Worcestershire sauce; 4 cloves garlic, minced; 1 teaspoon salt; teaspoon freshly ground pepper; 1 cup all-purpose flour; 3 cups vegetable oil, for frying; 8 8-inch flour tortillas; 1 cucumber, peeled, quartered lengthwise, seeded and sliced into 1/2-inch pieces; 2 cups arugula leaves; 1 cup fresh cilantro; Zest of 2 oranges; Lime wedges, for serving