1. Preheat the oven to 250ºF. Place a baking tray in the oven to warm it.
2. In a shallow dish, mix together the flour, salt, and pepper. In another shallow dish, beat the eggs until they are frothy. Place the cornmeal in a third shallow dish. Dip the fish fillets first into the flour mixture, coating them lightly on all sides. Then dip the fillets into the eggs, shaking off any excess. Finally, dip the fillets into the cornmeal.
3. In a large skillet over medium-high heat, heat 1/4-inch of oil. When the oil is hot but not smoking (it should register 375ºF on a deep-fat thermometer), add as many of the fish fillets as comfortably fit in the pan (usually 2). Cook the fish for about 1-2 minutes per side, or until it is golden and just done. Transfer fish to the baking tray in the oven and continue frying the rest of the fish as directed.
4. Serve the fish immediately, garnished with the lemon wedges.
Other Notes
Serves 6. When cooking fish, to test for doneness, poke it with a fork at its thickest point and take a look (poke the piece of fish that you plan to serve yourself, or garnish it well to hide the poking). Perfectly cooked fish is nearly opaque (except for tuna and salmon, which can be served quite deliciously rare in the center if very fresh), and should be very moist. It should flake in large chunks if at all. Fish that easily flakes and looks slightly dry is overcooked. Undercooked fish looks raw.