Paste the fish fillets in an electric blender till you reach a very fine minced texture. Keep aside.
Now blend all the other ingredients (except the oil and cornflour) until smooth. Mix gently with the fish paste.
Shape the 'dough' into small cakes and lightly dust with cornflour. Refrigerate for 15-30 minutes.
Heat the oil in a frying pan and fry the fish cakes until crisp and brown, turning once during cooking.
Remove from the oil using a slotted spoon and set aside to drain on kitchen paper.
Serve hot with a sweet chili dip.