Add brewed coffee, brown sugar, Worcestershire sauce, Italian spices, garlic, smoked paprika and salt together in a sauce pan and bring to a boil. Cook 5 minutes and set aside to cool completely.
Slice paddlefish into small chunks and place in a zip top baggie.
Pour marinade over fish, seal and refrigerate for one hour.
Heat smoker or grill to a medium fire of about 300°.
Place fish on a grill pan and place on smoker or grill.
Cook for 15-20 minutes or until internal temperature of fish reaches 145°.
Cover fish loosely with foil until ready to serve.
Meanwhile add olive oil to a skillet and sauté peppers and onions. Set aside and keep warm until ready to serve.
Bake taco shells according to package directions.
Top taco shells with smoked paddlefish, fresh tomatoes, sautéd peppers and onion, cotija cheese and cilantro.