Preheat oven to 425°F.
Combine green onion, red pepper strips, soy sauce, vinegar, sesame oil, ginger and sugar in medium-size bowl.
Arrange each fillet on a piece of aluminum foil, 14 x 12 inches. Divide green onion mixture equally over the top of each fillet. Sprinkle each fillet with 1 teaspoon sesame seeds. Fold top of foil over fish. Fold edges of foil over twice; crimp to tightly seal. Arrange packets on a baking sheet.
Bake in preheated 425°F oven for 10 to 12 minutes or until foil is puffed and fish is cooked through.