“…In the present study, the highest lysozyme activity was observed in the concentration of high dose treatment. Similar to our results, evaluation of lysozyme activity has been reported with thoodhuvalai (Solanum trilobatum) and heart‐leaved moonseed (Tinospora cordifolia) in Mossambique tilapia, Oreochromis mossambicus (Alexander, John Wesly Kirubakaran, & Michael, ; Divyagnaneswari, Christybapita, & Michael, ); holy Basil ( Ocimum sanctum) in rohu, Labeo rohita (Das, Raman, Saha, & Singh, ); peppermint (Mentha piperita) in Caspian brown trout, Salmo trutta caspius (Adel, Safari, Pourgholam, Zorriehzahra, & Esteban, ); henna (Lawsonia inermis) in common carp (Soltanian & Fereidouni, ); Excoecaria agallocha and Chinese mahogany ( Toona sinensis) in Nile tilapia, Oreochromis niloticus (Laith et al, ; Wu, Liu, Chang, & Hsieh, ), and common dandelion (Taraxacum officinale) and common hawthorn (Crataegus monogyna) in golden pompano, Trachinotus ovatus (Tan, Sun, Chen, et al, ; Tan, Sun, Huang, et al, ). Similar results were noted in common carp fed diets enriched with turmeric powder, Curcuma longa (Abdel‐Tawwab & Abbass, ), or Nile tilapia fed diets enriched with green tea, Camellia sinensis (Abdel‐Tawwab et al, ), American ginseng, Panax quinquefolium (Abdel‐Tawwab, ), or cinnamon ( Cinnamomum zeylanicum ) nanoparticles (Abdel‐Tawwab et al, ).…”