the best restaurant fried fish recipe

3 pounds fish fillets
2 cups all-purpose flour
3 cups pancake mix
3 cups club soda
1 tablespoon onion powder
1 tablespoon seasoned salt
1 egg

Dip moistened fish pieces evenly but lightly in the flour.
Dust off any excess flour and allow pieces to air dry on waxed paper, about 5 minutes.
Whip the pancake mix with the club soda to the consistency of buttermilk. It should be pourable, but not too thin and not too thick.
Beat in the onion powder and seasoned salt.
Dip floured fillets into batter and drop into 425 degree oil in heavy saucepan or fry daddy.
Brown about 4 minutes per side. Arrange on cookie sheet in 325degree oven until all pieces have been fried.