“…Among the organic acids used in fish diet formulations, citric acid is notable for its positive results for zootechnical performance by enhancing dietary nutrient digestibility and general animal health (Bano & Afzal, 2017; Bour, Esmaeili, & Kenari, 2018; Lückstädt, 2008; Sarker et al, 2007; Sugiura, Dong, & Hardy, 1998; Zhu, Qiu, Ding, & Wang, 2014). Citric acid inclusion levels of 2 and 3% have improved the ash, calcium, and phosphorus contents of muscle and bones in juvenile beluga sturgeon, Huso huso , (Khajepour & Hosseini, 2012).…”