Take a bowl,put the fish pieces into that.
Add some coconut oil & fish masala with the fish pieces & mix well and keep it aside.
Heat oil in a pan, add ginger, small onions, curry leaves and saute it well.
Add fish pieces & saute again.
When the masala is fully mixed with the fish pieces,add a cup of water.
Then add tomato pieces, fenugreek powder(uluva), kodumpuli(coccum), salt to taste & boil in low heat.
When the fish is cooked,add 1/2 cup of coconut milk.
:- Serve hot!!!