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EFFICIENCY OF STARTER DIETS ON THE SURVIVAL OF LARVAE OF INDIAN MAGUR, CLARIAS BATRACHUS

The study was conducted to observe the effect of different starter diets (live and dry) on the larval survival of Indian magur, Clarias batrachus. 8 diets were fed to larvae of C. batrachus for 10 days under continuous aeration system. Live food (mixed zooplankton) feeding resulted in 100% larval survival. In all the other (dry) diets, overall percentage mortality ranged from 37.5 to 80.0%. This revealed low acceptance of dry diets by the larvae. However, late acceptance of dry diets by the larvae was observed (as mortality rate decreased after 7 days), suggesting that larvae of C. batrachus also required a period of live food feeding, which can, gradually be replaced by dry compound diets. The water quality parameters such as temperature, dissolved oxygen and pH, remained in the range of 27-30 o C, 6.6-8.6 mg l -1 and 8.5-9.0, respectively.