1. You can add dried red chillies at the intial stage along with the fenugreek, but I preferred using green chillies.
2. Add more chilli powder for more spiciness, mine was just fine for us and the kids!
3. You can use any fish for this curry. I feel sardines would taste awesome!
4. You can very well use tamarind instead of gamboge, follow the same procedure.
5. Since I didn't want to add additional coconut oil, I just added the curry leaves as is. For extra flavor, you can sprinkle some more coconut oil, or temper - heat coconut oil, fry a couple of chopped shallots till brown, then fry curry leaves and add into the curry.