Wash the fish fillets thoroughly under cold running water.
Steam the fish for 10 minutes until fully cooked and flakes easily.
Remove any remaining skin and bones from the steamed fish.
Place all ingredients (steamed fish, onion, garlic paste, coriander, green chilies, cumin, salt, and bread) in a food processor.
Process until a soft, smooth dough-like mixture forms.
Remove the mixture and divide into small, equal-sized balls.
Flatten each ball into patty shapes using your palms.
Heat oil in a pan over medium heat for shallow frying.
Fry the kebabs until golden brown on both sides, about 3-4 minutes per side.
Drain on kitchen paper to remove excess oil.
Serve hot with garlic and tomato sauce.