Preheat oven to 400 F, line a baking sheet with parchment paper
Prepare your mango salsa, store in fridge while preparing the fish
Slice your fish into strips or chunks, as desired. Arrange on prepared baking sheet.
In a small bowl, mix together onion powder, garlic powder, and salt.
Sprinkle seasoning liberally over fish pieces. Flip each piece, season the other side.
Bake fish for 15 minutes, or until cooked through - cooked fish will flake easily with a fork.
While fish is baking, prepare your cassava flour tortillas, adding the garlic and onion powders to the dry ingredients.
Once fish is baked and tortillas cooked, assemble tacos with fish and salsa, serve immediately!