Preliminary study on the visual sensitivity of Oreochromis niloticus using LED light source for the aquaculture development in Uganda

The visible threshold of Oreochromis niloticus responded to high light intensity under short wavelengths, whereas the response low long wavelengths was low, with a minimum visual 574 nm LED lights. Movement distance O. dropped at 31°C and increased abnormally 37°C natural light. Comparing movement red (622 nm) green (518 lights LED, swimming speed were higher than However, decreased rapidly lowest 33°C After that, there tendency adapt water temperatures gradually. Consequently, may be recommended for niloticus’s aquaculture because have positive effect on growth performance, survival rate, metabolism, as shown in previous studies. It is necessary control temperature below 32°C abnormal behavior above revealed