What is the major cause of increased rate of mortality in three weeks old African Catfish (Clarius gariepinus) fry?

The fish are kept under a re-circulatory system, fed on 0.25 mm Skretting at an interval of 1 hour everyday, and the excess feed (if any) is siphoned out regularly. Average water temperature is 28...

11 November 2018 7,518 15 View