Wash the cucumbers, halve them crosswise and cut or slice them lengthwise into thin slices. Peel and chop the onion. Halve chilli lengthwise, remove seeds, wash and chop finely. Wash coriander, shake dry and chop coarsely.
Wash the fillets, dab dry and cut each fillet in three. Knock the pieces a little flatter if necessary, season with salt and pepper. Whisk egg and milk. Mix breadcrumbs and grated coconut. Turn meat first in flour, then in the egg and finally in the coconut mix.
Heat 3 tablespoons of oil in a large coated frying pan. Fry the meat in it over medium heat for 3-4 minutes on each side.
Meanwhile squeeze the orange. Mix juice, vinegar, salt, pepper and 1 pinch of sugar. Fold in 3 tablespoons of oil. Stir in cucumber, onion, chilli and coriander and season the salad again. Arrange everything.