1. Preheat grill to medium-high heat (350° to 400°). Combine first 5 ingredients in a small bowl; brush onto fish fillets.
2. Grill fish 5 minutes on each side; grill tortillas 30 seconds on each side. Flake fish into bite-size pieces. Place Jalapeño-Cabbage Slaw on tortillas; top with fish. Serve tacos with lime wedges.