For the walleye BBQ style, defrost the walleye fillets and pat dry. Rub them with the BBQ sauce and let them marinate in a bowl for about 2 hours in the refrigerator.
Preheat the grill to 200°C. Grill pike-perch fillets directly over heat source for about 6 minutes. Turn over halfway through. Serve the pike-perch BBQ style with leaf salad.