Preheat oven to 300 degrees. Line jellyroll pan with foil. In bowl, combine goldfish crackers,oyster crackers and butter. Add dressing mix and 2 tablespoons water; toss until crackers are well coated. Spread mixture in jellyroll pan.
Bake until dry and toasted, 15-20 minutes, stirring halfway through baking time. Transfer to large bowl; stir in Twisterz and wasabi peas. Cool completely. Stir in swedish fish.