1. Fish is very delicate hence handle with utmost care while cooking. 2. Adjust spice levels to suit your taste. 3. You can also substitute chives with spring onions. 4. Using hot water to grind the paste will aid the poppy seeds to grind easily. 5. You can use ginger garlic paste in case you do not have fresh ginger and garlic and grind only the other ingredients for the paste, but definitely there is a difference in the taste. 6. Make sure not to cook more that 10 to 15 minutes after adding the fish (depending on the quantity). 7. For vegetarians- Use the same process to make delicious veggie gravies, just substitute fish with any of your favourite veggies.