Thaw. Bake in a 350° oven for 10-12 minutes or fry in a skillet until it flakes easily.
Fish taco topping suggestions:
lettuce, cabbage or coleslaw, diced tomatoes, sliced green onions or purple onions, mango or pineapple salsa, shredded carrots, salsa, pico de gallo, jalapeños or serrano, peppers, cilantro, avocados or guacamole, Cotija cheese, black beans, corn, hot sauce, chipotle mayo, fresh lime wedges