“…Recently, pharmaceutical scientists have focused on using plants with medicinal properties to combat infectious agents and creating better aquaculture systems by utilizing different mechanisms (Citarasu, 2010; Fadl et al., 2020; Zakęś, Kowalska, Demska‐Zakęś, Jeney, & Jeney, 2008). These medicinal plants can either indirectly impact the cultured fish by strengthening the immune system and/or directly influence the host and its functions and processes to improve its physiological performance (Adel, Dawood, Shafiei, Sakhaie, & Hosseini Shekarabi, 2020; Awad, El‐Fiqi, Austin, & Lyndon, 2020; Gholamhosseini et al., 2020; Van Hai, 2015). Great efforts have been devoted to medicinal plants in regulating the fish immune response if either infection or stress happens (Devakumar & Chinnasamy, 2017; Ghehdarijani, Hajimoradloo, Ghorbani, & Roohi, 2016; Saeidi Asl, Adel, Caipang, & Dawood, 2017; Wang, Sun, Liu, & Xue, 2017).…”