Marinate the Fish
Wash and pat dry the tilapia pieces. In a bowl, mix turmeric powder, red chili powder, salt, lemon juice, and ginger garlic paste. Coat the fish evenly and let it marinate for 20–30 minutes.Fry the Tilapia
Heat 2 tablespoons oil in a pan over medium heat. Lightly fry the marinated tilapia for 2–3 minutes on each side until slightly golden. Remove and set aside.Prepare the Masala
In the same pan, add mustard seeds and cumin seeds. Let them splutter. Add curry leaves and chopped onions. Sauté until golden brown.Add Aromatics
Add ginger garlic paste and cook for 1 minute until fragrant. Stir in tomato puree and green chilies. Cook until the oil begins separating from the masala.Add Spices
Mix in coriander powder, cumin powder, Kashmiri chili powder, garam masala, and salt. Cook the masala for 2–3 minutes.Simmer the Curry
Pour in water and bring the curry to a gentle boil. Carefully add the fried tilapia pieces.Cook the Fish
Cover and simmer on low heat for 6–8 minutes until the fish is tender and fully cooked.Garnish and Serve
Turn off the heat and garnish with fresh coriander leaves. Serve hot with steamed rice, naan, or chapati.