Because of its rapid growth rate, high production, and good disease
resistance capability, genetically improved farmed tilapia (GIFT)
(Oreochromis niloticus) has become an important aquaculture species
in China. This species also has high market value in the global fish
trade (Dey et al., 2000). Therefore, the aim of the present study was
conducted to assess the effects of BFT on the growth performance,
digestive enzyme activity, hematology, and immune response of GIFT
in a light-limited and zero-water exchange culture system. In addition,
the water quality and nutritional content of the biofloc and fish were
investigated, which may provide insights into exploring the effects of
BFT on aquatic animals.