In a large mixing bowl add garam flour, corn flour and rice flour along with all the spices. Mix and gradually add water until thick batter is formed.
Cut fish into desired pieces. Pat dry with paper towel to ensure its dry to touch.
Add the fish to batter and mix to coat it . Cover the bowl with cling and marinate for atleast 2 hours.
Heat oil in a pan for shallow frying. To test the oil temperature drop some batter into it, if it floats and tiny bubbles are formed it means its the right temperature. Turn the heat to medium heat.
Add the fish pieces in the oil without overcrowding the pan. Fry until its golden on both sides.
Drain the fish over paper towel.
Serve immediately with some mint chutney on the side.
Notes
Any white flesh fish can be used for this recipe. I used Barramundi, similar fish are snapper, sole, basa or grouper. You can also use fresh water fish.