Wash the fish and dry with kitchen
paper. Cut it into 12 equal pieces. Rub the lime juice over the fish
on all sides and leave for 15 minutes. Dry them again with kitchen
paper and rub the pieces of fish with equal amount of salt and pepper.
Roll them in the flour and shake off any excess. Heat up oil in pan
until very hot. Dip the pieces of fish in the beaten and fry them for
about 5 minutes until golden brown. Bring 1/4 cup of water to the
boil. Dissolve the sugar in the boiling water and add the vinegar.
Stir well. Remove pan from heat and add the remaining ingredients.
Stir the sauce vigorously. Spoon the lukewarm sauce on to warmed
plates and place the pieces of fish in the center. Garnish with thin
strips of spring onions and serve.