To make coleslaw, combine both cabbages, red onion, pickled jalapenos , and peaches in a medium bowl.
In a small bowl, whisk together mayonnaise, sugar and pickled jalapeno liquid. Add to cabbage mixture and stir to combine. Season to taste with salt and pepper and refrigerate until needed.
In a pie pan or a shallow dish, combine flour, cornmeal, garlic salt, and cayenne pepper.
In a medium bowl, whisk together buttermilk and egg.
Cut catfish into 1-inch strips and season with salt and pepper.
Dip in buttermilk mixture and then coat in cornmeal mixture.
Heat 1 inch of oil over medium heat in a cast iron pan.
Cook catfish until golden brown, about 2-3 minutes, Drain on paper towel-lined plate.
Warm the tortillas either in the microwave or in a pan over low heat.
Place a couple of catfish strips on each tortilla and top with slaw and cilantro.