Bring a pot of water to a boil, salt it, add the pasta and cook until al dente. Drain, then rinse with cold water.
While the pasta is working, position a rack in the upper third of the oven and preheat the broiler. In a bowl, whisk together 1/4 cup teriyaki, the honey, oil, vinegar, chile, ginger and garlic; drizzle in sesame oil to taste. Toss in the pasta, cabbage, edamama and scallions. Top with the sesamme seeds.
Arrange the fish on a lightly greased baking sheet or broiler pan. In a small bowl, combine the mayo (or Vegenaise), 2 tbsp. teriyaki and the wasabi paste. Slather the sauce over the fish. Broil until firm, opaque and well browned, 8 to 10 minutes.
Serve the fish on top of the pasta. Flake the fish to combine it with the pasta as you eat.