Marinade fish: Mix all the Fish Marinade ingredients in a ziplock bag, ensuring the fish is well-coated. Allow it to marinate for at least 20 minutes but not more than an hour.
Pickled Cabbage: In a bowl, combine the cabbage, green onions, vinegar, and salt. Toss well and let it sit for about 30 minutes. Afterward, drain any excess liquid and scrunch the cabbage with your hands to soften it further. Set aside.
Pink Sauce: Simply mix the sour cream and sriracha until well blended. Adjust the amount of sriracha to your preferred level of heat.
Cook fish: Heat the olive oil in a skillet over high heat. Place the marinated fish in the skillet and cook for approximately 2 minutes on each side, until the fish is golden brown and cooked through. Transfer the fish to a plate and flake into large pieces.
Assemble Tacos: To assemble the tacos, start by placing some pickled cabbage on each tortilla. Add a generous portion of the flaked fish, then top with a dollop of the pink sauce. Finish with a squeeze of lime juice and garnish with fresh cilantro leaves. Fold the tortillas and enjoy!