1. Mix ingredients for fajita marinade in a large resealable bag.
2. Marinate carp pieces in fridge for at least 1 hour.
3. Prepare a hot grill. (A broiler can sheet pan can also work.) Grill fillets directly on the grill or with a fish basket or aluminum mesh.
4. Place fish and toppings at the table, allowing diners to prepare their own fajitas.