The % survival of both RT and NT fry, fed with Rb was significantly higher than when fed with other feed types (Mf and Cf). Therefore, it appears that there is no need to feed fry of NT and RT with Mf or Cf. However, the Rb is not cheap in the agricultural areas. It costs Rs.7 –8/kg, as it is used in the preparation of poultry feed. Then the reduction of the amount of Rb is very important. It could be done through the preparation of aqua-feed. So, attempt should be made to prepare a suitable low cost aqua feed for cage rearing fish. It would be help to develop cage culture and finally the Rural Aquaculture in dry zone of Sri Lanka.