Biofloc technology:1. Improves water quality parameters and fish growth performance.2. Will enable aquaculture to grow towards an environmentally friendly approach.3. fish in biofloc feeds on microorganisms lead to reduces the rate of feed conversion and thus reduces feed costs.4. The microorganisms in the biofloc may partially replace the protein content in the diet or reduce its dependence on fishmeal.5. Biofloc technology saves water consumption by 90% compared to control groups, so it is a promising comprehensive technology suitable for aquaculture away from water bodies.6. Biofloc increase net income with about 30%.