Step 1
Preheat oven to 180°C/160°C fan-forced. Cut each fish fillet into 3. Combine fish, lime rind, lime juice, oil and pepper in a large glass or ceramic dish. Turn fish to coat. Set aside for 5 minutes to let flavours develop. Combine tomato, onion and basil in a small bowl. Season with salt and pepper.
Step 2
Heat a large non-stick frying pan over medium-high heat. Cook fish, in batches, for 2 to 3 minutes each side or until just cooked through. Transfer to a plate. Cover to keep warm.
Step 3
Heat shells following packet directions. Divide cabbage between shells. Top with fish and tomato mixture. Serve with lime wedges.