Pre-heat the oil to 375°F in a countertop deep fryer or 2 1/2-3 inches of oil in a large deep pot.
Season the fish with salt and pepper and dredge lightly in the Wondra. In a large mixing bowl, whisk up the batter of beer, flour, Old Bay, baking powder and egg.
When the oil is hot, dip the fish, two pieces at a time, in the batter and fry for 4-5 minutes to deep golden.