Wash, peal, dry and cut all the vegetables in this manner.
Marinate the fishes with salt for half an hour.
Take mustard oil in a Kadai and Fry them lightly from both sides till slightly golden and keep aside.
To the same Kadai fry the brinjal pieces and keep aside.
Add some oil in the Kadai, add 1/2 teaspoon celery seeds, mustard seeds and fenugreek seeds.
Once it gets aromatic add the ginger paste and slitted green chilies. Saute for a minute.
Add in rest of the vegetables and saute for two minutes. Add salt and some water. Cover and cook too the vegetables are almost cooked.
Meanwhile Make a paste with the rest of the celery seeds.
Add the fish pieces, milk, celery seeds paste and the fried brinjal. Let the stew come to a boil on a medium flame for 4-5 minutes.
Serve hot with rice.