Buy fish eggs or fingerlings with known health status i.e. from a farm, which is under surveillance of Fish Health Services;
Keep an optimal density of fish in the raceways 4-5 kg/m3 stocking density is generally the optimum one;
The velocity of the water should be double the length of fish being reared in the raceways;
Daily fish ration has the direct relationship with water temperature. Over feeding may give birth to severe diseases besides poor economics or even loses;
Good hygiene in the raceways and their disinfections at proper intervals can save fish from various diseases;
Ensure strict vigil on the up stream water. It should be free from sewage and pesticide washings;
Avoid unnecessary stress to the fish from handling. Treatment and shorting be done by experienced /qualified hands;
Ensure regular health control measures;
On any sign of disease discontinue feeding and call for personal of Fish Health Service;
All in- all out system be observed. Entire facility / raceways be emptied and disinfected before the recruitment of fresh stock.