ABSTRACT Continuous illumination has been known to exert positive effects by stimulating growth and delaying unwanted maturation in seasonal-temperate farmed fish species like salmonids. However. in tropical fish like Nile tilapia ( Oreochromis niloticus ). some studies exist showing inconsistent results and even fewer data is available regarding the effects of light intensity. https://www.isyeriacilisi.com/product-category/magnetic-toys/