“…The flavonoids and phenolic acids in moringa leaf powder have been well proven to exhibit immune modulation properties (Evans, 1994). In contrast, the positive effects of many plant extracts such ginger ( Zingiber officinale ) (Haghighi & Rohani, 2013), stachys Vahl ( Stachys lavandulifolia ) (Moghanlou, Isfahani, Dorafshan, Tukmechi, & Aramli, 2018), macroalga ( Sargassum angustifolium ) (Zeraatpisheh, Firouzbakhsh, & Khalili, 2018), black cumin seed oil ( Nigella sativa ) and nettle extract ( Quercetin ) (Awad, Austin, & Lyndon, 2013), elephant's foot ( Elephantopus scaber ) (Doan, Hoseinifar, Sringarm, Jaturasitha, Khamlor, et al, 2019), assam tea ( Camellia sinensis ) (Doan, Hoseinifar, Sringarm, Jaturasitha, Yuangsoi, et al, 2019), fermented moringa ( M. oleifera ) (Zhang et al., 2020) and moringa ( M. oleifera ) (Mansour et al., 2020) have shown immune response improvement in fish.…”