Directions: Combime soy sauce, 1 tea spoon sesame oil, 1/4 tea spoon of the sugar and the Wasabi powder. Rinse fish, pat dry with paper towels. Brush both sides with the above mixture.
Grease the preheated grill, place fish on it, cover and grill for 3 to 5 minutes, or until fish just flakes easily, when tested by a fork.
Meanwhile, for a slaw, in a medium bowl combine the zuccini, radishes, pea pods and chives. Stir together vinegar, remaining sesame oil and remaining sugar. Drizzle over the zuccini mixture, toss to coat.
Serve the fish on top of the slaw.