“…Nowadays, antibiotics and chemotherapeutics are not regularly used for disease control because it can lead to the development of antibiotic‐resistance bacterial strains and may modulate the immune response (Lunden, Lilius & Bylund ). Therefore, some alternative methods for disease prevention have been developed in aquaculture, such as developing an electrolytic water systems in hatchery to improve water quality and reduce concentration of pathogens in water (Yeh, Hsia & Liu ) and using immunostimulants (Sakai ; Cheng, Liu, Kuo & Chen ; Yeh, Shiu, Shei, Cheng, Huang, Lin & Liu ; Yeh, Hsia, Chiu, Chiu & Liu ) and probiotics (Gatesoupe ; Farzanfar ; Liu, Chiu, Ho & Wang ; Tseng, Ho, Huang, Cheng, Shiu, Chiu & Liu ; Liu, Chiu, Shiu, Cheng & Liu ) to improve the immunity and disease resistance of aquatic animals.…”