01 - Pat the fish fillets dry with paper towels. Season both sides generously with salt and black pepper, ensuring even coverage.
02 - Arrange three shallow bowls: place flour in the first bowl, beat eggs with milk in the second bowl, and place breadcrumbs in the third bowl.
03 - Dredge each fillet in flour, shaking off excess. Dip into the egg mixture, allowing excess to drip off, then press firmly into breadcrumbs to coat thoroughly on all sides.
04 - Pour approximately 1/2 inch of vegetable oil into a large skillet. Heat over medium-high heat until the oil shimmers and reaches 350°F.
05 - Fry fish fillets in batches, cooking for 3-4 minutes per side until golden brown and crispy. Transfer to a wire rack or paper towels to drain excess oil.
06 - Combine mayonnaise, Dijon mustard, chopped pickles, capers, lemon juice, and parsley in a small bowl. Season with salt and pepper, mix thoroughly, and refrigerate until serving.
07 - Plate the fried fish immediately while hot, accompanied by chilled tartar sauce. Add lemon wedges on the side for squeezing over the fish.