Marinate fish in avocado oil, lime juice, and spices for at least 15 minutes.
Prepare the mango salsa by combining all chopped ingredients with lime juice, avocado oil, and salt.
Make the sauce by blending mayonnaise, sriracha, garlic, lime juice, and water until smooth.
Cook the marinated fish in a heated pan over medium-high heat for 6-8 minutes per side.
Use the leftover oil and flavor in the pan to warm the tortillas.
Assemble tacos with tortillas, fish, salsa, sauce, and chopped cilantro. Serve with extra lime and enjoy!