Growth performance, survival or/and cannibalism rate of larvae are directly affected by feeding strategies, hatchery management, etc. (Mohler, King, & Farrell, 2000; Deng et al., 2003; Leu et al., 2018; Uriarte et al., 2019) and thus knowing these key factors for sturgeon larviculture helps farmers to provide an appropriate condition. There are, though, a few studies on how sturgeon larviculture can be influenced by feeding/fasting, size sorting and stocking density. It is the first time given cannibalism nature of Persian sturgeon larvae has been reported. The growth and survival rate drawn from this study have been proved by previous documents regarding fish feeding frequency.