Preheat the oven to 150 degrees Celsius.
Combine rice vinegar, lemon juice, tamari/soy sauce, fiber syrup/honey/agave and sambal oelek (if using)in a bowl.
Cut the salmon into dices and place in an oven safe baking pan. Pour the marinade over the salmon and stir to combine.
Bake in the oven for 6-10 minutes, don't overbake so it gets dry.
Meanwhile preheat a nonstick pan over medium heat.
Prepare the topping by slicing the avocado, red chili and scallion.
Fry the tortillas in the nonstick pan until warm (20-30 seconds or so).
Assembly the tacos by placing fresh spinach at the bottom of the tortillas.
Top with avocado, baked salmon, scallion, red chili and furikake seasoning.