“…Extensive research has been performed on replacing fish meal with alternative protein sources, such as soybean meal, cotton seed meal, and peanut meal (Gatlin III et al, ; J. Wang et al, ; Xu et al, ). However, oversubstitution of fish meal with plant protein sources led to reduced growth performance, lower disease resistance, and the increased use of chemical drugs during aquaculture (Dossou et al, ; Sitjà‐Bobadilla et al, ; Urán et al, ; Ye et al, ; Zhou, Chen, Ji, & Yu, ). Supplying an immunopotentiator, which could enhance the nonspecific defense mechanisms or the specific immune response of animals (Anderson, ), to plant protein‐based diets has attracted research attention (Abdelkhalek, Ghazy, & Abdel‐Daim, ; Awad & Awaad, ; Sahin et al, ; Zheng et al, ).…”