Combine all Kickin' Cajun Seasoning Mix ingredients in a small bowl.
Pat fillets dry with paper towels. Season the fillets liberally with Kickin' Cajun Spice Mix on both sides, pressing the seasoning into the fish with your hands. Wash hands thoroughly.
Place a large saute pan over medium-high heat and add butter and oil. When the pan is nice and hot, add the seasoned fish. Cook, undisturbed, for several minutes, until golden brown on one side. Flip fish over and continue to cook until opaque and completely cooked through.
Squeeze lemon or lime juice over the fish and serve.