“…In general, a number of studies demonstrate that low levels (<5% of the diet) generally did not result in poor performance in both freshwater (e.g. tilapia, (Natify, Droussi, Berday, Araba, Benabid, 2015), (Guroy, Cirik, Guroy, Sanver, Tekinay, 2007); African catfish, (Abdel-Warith, Younis el, Al-Asgah, 2016) or in marine fish such as gilthead seabream, (Emre, Ergun, Kurtoglu, Guroy, Guroy, 2013). In a few cases improvements in growth have been reported.…”