Tilapia tacos

Heat grill. Grill fish fillets for about 3 minutes on each side until fully cooked, then remove and place on a small platter. (Alternatively, spray a nonstick skillet with nonstick cooking spray, place fillets in skillet, and cook for 3 minutes on each side over medium-high heat.) Using a fork, flake the meat into a coarse mixture, and place in a small serving bowl. Warm tortillas in the oven or, if desired, grill briefly on a small baking tray in a single layer. Assemble 6 small bowls for serving scallions, cilantro, black beans, lettuce, red peppers, and salsa. Cut limes into quarters and place on a small plate. Allow diners to assemble their own tacos, using freshly squeezed lime juice and hot sauce to complete the taco as desired.