To begin making the Fish Tandoori recipe, keep the head and tail on and remove the fins and insides of the fish.
Make as many horizontal slits as possible to the fish on both the sides for marinade to go deep inside. Wash it really well and apply salt on both the sides .
Keep for about 10 minutes. In a bowl, mix together all the marination ingredients together really well including curd, onions, green chiliies, tandoori masala, ginger garlic paste, red chilli powder, garam masala powder, cumin powder, coriander leaves, salt and apply it to the fish on both the sides, pressing the mixture inside the slits really well .
Keep it covered for about 40 to 50 minutes for marination. The longer is better.
Preheat you oven to 400 degree Fahrenheit. Lightly brush the grill with oil and place the fish over the grill.
Place your grill on the baking tray and bake for about 20 minutes.
To check the fish whether baked well, insert a toothpick and check if it feel soft and light. If it does, remove the stick out and serve hot.