Effects of different artificial light colors on the growth of juveniles common carp (Cyprinus carpio)

The experiment was carried out to investigate the effects of light colors on growth and survival of juvenile common carp Cyprinus carpio. Five different light colors were tested in triplicates. Juveniles fish were fed to satiation twice a day for 60 days. The fish was significantly affected by light intensity. The survival percentage rate of the fish was also assessed and varied from 40% to 90% at different treatments. The results also showed that growth performance was significantly affected by the light colors. The effect of red light was better than other colors lights , where the red light gave the best fish percentage weight gain (WG = 88.5 %), specific growth rate (SGR = 2.90 %) and daily growth rate (DGR = 12.81 %) . The lowest mean values of feed conversation ratio (FCR = 0.564) was showed in red light while The highest mean values of feed conversation ratio (FCR = 0.603) was found in dark condition. These details can be applied to start steady mass-scale and sustainable farming technology for common carp and will improve the culturing effectiveness of the fish juveniles