The fertilized eggs from each female breeder were
transferred to separate hatching concrete tanks of 50 m3
each.All fertilized eggs developed to fry in 3 days, and the
fry were nursed in the same tank.After 1month, a random
sample of 500 fish in each tank was kept and the others
were removed to culture for commercial utility. At
8 months old (juvenile stage), 50 fish from each family
(tank) were randomly chosen for weighing and measuring,
including bodyweight (BW, g), total length (TL, cm),