Here is one good recipe you could try...I wont name it. Just try and let me know, how you would want to name it.
Ingredients:
500g tuna or reef fish -2lbssalt - 3 tspwater - 1ltrsdried chilli -5curry leaves - to tasteonions - 1 bigMethod:
Peel the onion and chop into thick pieces cut the fish in to cubes (2inch) put water to boil and add salt. Put the fish into the boiling water and remove the oil which forms on the top while cooking. when the fish cubes appears white in colour add the remaining ingredients.Source: Indolink Recipe
Here are some changes I would suggest1. Instead of dried chillies use raw chillies to taste (preferably Githeyo mirus)
2. Add a pinch(about 5 g) ghee oil3. Squeeze lemon if you want to try as a soup.Hope you'd enjoy this!