“…However, it is widely known that a wide range of microorganisms, their cell components or their metabolites (carotenoids) in BFT can act as immunostimulants that improve innate immune system and provide protection against pathogens (Ekasari et al., ; Smith, Brown & Hauton, ; Vazquez et al., ). The positive effects of BFT on immune response in different shrimp species have been reported in several studies (Ekasari et al., ; Kim, Min, Kim, Koo & Kang, ; Kumar et al., ; Zhang, Li, Li, Liu & Luo, ; Zhao, Pan, Huang, Wang & Xu, ). However, little effort was made to study the effect of BFT on physiological health and non‐specific immunity of cultured fish.…”