Blackened Tilapia Tacos

TILAPIA
Friday night dinner on the houseboat will be those damn, boring, blackened fish tacos and cumin dusted tortilla chips with salsa. Let the games begin boys!
 
Blackened Tilapia Tacos
 
1/4 cup sour cream
2 tablespoons chopped fresh cilantro
2 tablespoons fresh lime juice
1 jalapeño pepper, seeded, ribs removed and finely chopped
1 cup thinly sliced white onion
1 1/2 teaspoons paprika
1 1/2 teaspoons Old Bay
1 teaspoon dried oregano
1 teaspoon garlic powder
1/2 teaspoon salt
1 teaspoon ground cumin
1/4 teaspoon ground red pepper
4 (6-ounce) tilapia fillets
1 tablespoon canola oil
8 (6-inch) corn tortillas
1/2 ripe peeled avocado, thinly sliced
4 lime wedges
 
Combine first 4 ingredients in a food processor; process until smooth. Combine jalapeño sauce and onion in a small bowl.
Combine paprika and next 6 ingredients (through ground red pepper); sprinkle evenly over fish. Heat oil in a large cast-iron skillet over medium-high heat. Add fish to pan; cook 3 minutes on each side or until desired degree of doneness.
Warm tortillas over a gas flame or in a skillet. Divide fish, onion mixture, and avocado evenly among tortillas. Serve with lime wedges.
 
Topping ideas:
Sliced radish
Diced tomato
Shredded cabbage
Coarse sea salt