CALIFORNIA BBQ Sauce: Bring all ingredients to boil in saucepan on medium heat, stirring frequently; simmer on medium-low 2 min., stirring constantly. Remove from heat.
FOR each serving: Grill fish on medium-high heat 3 to 4 min. on each side or until fish flakes easily with fork, brushing with 1 Tbsp. of the California BBQ Sauce after turning. Remove from grill; turn over. Brush with 1 Tbsp. of the remaining California BBQ Sauce.