Doodh Maach is a popular Bengali fish curry that is loved by many. It is a creamy and subtle curry that is cooked with milk, making it a unique and delicious dish. However, choosing the right fish for this curry is crucial. You can use any big carp such as Rehu aka Rui Maach, Katla mach, Bhetki aka Indian Baramundi or Salmon to cook this fish curry. These fishes are perfect for this curry as they have a firm texture that holds up well in the creamy sauce.