A considerable mean (%) increase of body weight was observed in white-adapted carp (43.892%, being 4.66 and 3.58% higher than that obtained from black (39.226%) and green-adapted carp (40.314%), respectively (Table 2). Also, white-adapted carp showed highest specific growth rate (SGR) level, while the lowest (Fig. 2a). In addition, white tanks developed th lowest food conversion ratio (FCR) level compared to that of fish from black and green backgrounds (Fig. 2b).