In a deep sauté pan over medium heat, heat enough oil for pan frying.
In a blender, process cornflakes until finely ground. Transfer to a shallow plate. Stir in flour, and salt and pepper to taste. Season fish lightly with salt and pepper on both sides. Dredge in flour mixture.
Pan fry fish in hot oil until cooked through. Drain on a rack with paper towels. Repeat with remaining fish.
Make Garlic Mayo: Drain the oil from the pan, leaving about 1 Tbsp. and return to the heat. Once hot, brown garlic. Transfer garlic to a small bowl. Add a squeeze of lemon juice and stir in mayo.
Serve fish with garlic mayo, lemon wedges, and rice.