Get seer fish slices, which are less than a cm in thickness. Rub some lemon juice, kashmiri chilly powder, chilly powder, turmeric powder, roasted cumin+coriander powder, all spice mix, garlic powder and salt on the fish slices and let it chill in fridge for an hour.
Take equal parts of rice flour, gram flour and rava (sooji). Season it with some salt, chilly powder, ground pepper, finely chopped fresh coriander.
Coat the fish with this and pan fry on medium heat.
Goes amazing with just some rice and rasam.