Seafood thermidor

1 lb Fresh or frozen fish fillets
    1/2 lb Crabmeat,clams,shrimp and or
           -scallops (any combinations)
      1 cn Cream of shrimp soup
      3 tb flour
    1/4 c  Milk
    1/4 c  White wine
    1/4 c  Shredded Mozzarella cheese
      2 tb Snipped fresh parsley
    1/2 c  Soft bread crumbs
      2 tb Parmesan cheese
      2 tb butter
    1/2 ts Paprika
    1/2 ts Dijon mustard
    1/2 ts Fresh lemon juice
           Lemon slices and parsley for
           -garnish
           Thin slices of green onion
           -rings for garnish
      1    Quartered onion and 1 lemon
           -slice for poaching seafood
 
  Thaw fish,if frozen.Cut into 1/2" cubes.Place all seafood in a pan or
  skillet.Add lemon slice,quartered onion and water,just to cover.
  Bring to a boil,then reduce heat and simmer for 4 minutes.Meanwhile,
  in a small saucepan,blend soup and the flour.Gradually,stir in milk,
  lemon juice and wine.Cook while stirring constantly until thick.Stir
  in mustard,Mozzarella and parsley. Carefully,drain seafood well and
  gently fold in sauce.Spoon mixture into a lightly-greased medium-size
  casserole or into individual casserole dishes.Combine bread
  crumbs,Parmesan cheese,butter and paprika.Sprinkle over
  casseroles.Broil 1 to 2 minutes.Serve over your choice of rice or
  pastry shells.Serves 4.