author(s)
R Nigar Sulthana

abstract
This study evaluates the efficacy of Biofloc Technology (BFT) in enhancing water quality and production yield of Indian major carps (Catla catla, Labeo rohita, and Cirrhinus mrigala) in the coastal region of Chittur, Andhra Pradesh. Over a 120-day culture period, biofloc-based ponds demonstrated superior water quality parameters, with significantly reduced total ammonia nitrogen (TAN) and nitrite levels compared to traditional pond systems. The microbial community within biofloc systems facilitated efficient nitrogen recycling, leading to improved dissolved oxygen stability and pH regulation. Growth performance metrics revealed a 32% increase in final biomass, a 24% improvement in feed conversion ratio (FCR), and a 95% survival rate in BFT ponds. Comparative analysis underscores BFT’s potential as a sustainable alternative to conventional aquaculture practices in resource-limited coastal regions. These findings align with earlier research on microbial-based aquaculture systems and offer practical insights for implementing BFT in tropical aquaculture contexts.