Dry roast cumin and coriander seeds.Cool it and make a fine powder of it.
Steam fish for 8-10 min. Pat dry in a kitchen towel , debone it. Mash it well with boiled potato.Season with salt and cumin,coriander powder.
Take a pan and heat mustard oil.Add green chili and fry for a minute.Add chopped onion,minced garlic ,turmeric powder and fry for 2 minute.Mix the fish mixture and cook for a minute only.Mix coriander leaves.
Cool the mixture.Dust your palm with flour and shape them into 10-12 ball.In a bowl whisk egg white for 30 sec. Heat oil in a deep kadai for frying. Dip one ball in egg-white and coat with breadcrumbs and dip it again in egg-white.Crumb coat with bread-crumbs and deep fry at medium flame.I did double coating to seal it well.Be careful while frying as it take less time to fry.