Remove skin of fishes and remove the waste inside the belly of the fishes cut all over the fishes using sharp knife, and finally wash with water,mix with salt, keep aside,Now take a bowl put all ingredients like corn flour,salt,chaat masala,red chilli powder,chopped garlic,lime juice,tamarind pulp,jeera dhania powder,garam masala powder, black pepper powder,and all make a nice paste,