To prepare salsa: Combine mango (or pineapple), cilantro, red onion and half of a squeezed lime. Set aside.
In medium sized bowl toss together melted butter, raw shrimp, and Jamaican jerk seasoning
Preheat skillet to medium high and add oil. Fry shrimp in preheated pan for about 2 minutes on each side, or until golden crusted.
Assemble tacos by layering shrimp, cabbage and mango salsa.
Serve with lime wedges.