“…So far, diverse compounds from natural sources, comprising yeast derivatives, glucans, complex carbohydrates, and vitamins, have been declared to assume the role of immunostimulants in aquaculture and are considered biodegradable, biocompatible, and secure for the ecology as well as animal health (Mastan, 2015; Meena et al, 2012). Moreover, treating plants involving seaweeds (macroalgae) and seaweed‐derived polysaccharides is inferred as a dynamic way for the sustainable management of disease by replacing antibiotics (Chakraborty & Hancz, 2011; Shi et al, 2019; Shi, Yu, et al, 2020; Tan et al, 2021; Thanigaivel et al, 2016; Zhu et al, 2016, 2017). Seaweeds can generate biologically active metabolites like polysaccharides with nutraceutical properties, i.e., immunoregulatory, anti‐inflammatory, antioxidant, antitumor, antidiabetic, antiviral, and antibacterial activities (Tanna & Mishra, 2018; Wang et al, 2019).…”