RINSE fish with cold water; pat dry. Use sharp knife to make 3 diagonal cuts into flesh on each side of fish. Place on heatproof plate. Mix next 4 ingredients; pour over fish.
FILL metal steamer half full with water; bring to boil on high heat. Place fish (on plate) inside steamer; cover steamer. Cook fish 8 to 10 min. or until it flakes easily with fork.
REMOVE fish from steamer; top with remaining ingredients.