Preheat grill to medium-high heat. Place fish in a medium size dish. Whisk together the oil, lime juice, ancho, jalapeno, and cilantro and pour over the fish. Let marinate for 15 to 20 minutes. Remove the fish from the marinade place onto a hot grill, flesh side down. Grill the fish for 4 minutes on the first side and then flip for 30 seconds and remove. Let rest for 5 minutes then flake the fish with a fork.
Place the tortillas on the grill and grill for 20 seconds. Divide the fish among the tortillas and serve with garnishes listed below (follow links to recipes)
Crema
Hot Sauce
Green Onions, chopped
Cilantro
Fresh Salsa