Sweet and spicy pineapple salsa is the perfect companion for these grilled fish tacos!
Prepare salsa by mixing onion, pineapple, jalapeno, cilantro, and lime.
Heat grill or skillet to medium-high heat. Squeeze lime over fish filets and sprinkle evenly with blackening seasoning. Brush or spray with oil.
Grill fish on foil or a grill mat (optional) for 8-10 minutes on each side, depending on thickness, or until it reaches an internal temperature of 145°F.
While fish is cooking, heat tortillas.
When fish is done, use a fork to flake into 1-inch pieces. Serve with tortillas, cotija, lime wedges, and pineapple salsa.