Abstract

The accelerated growth of aquaculture has caused environmental impacts in many countries. Examples include the use of large volumes of water, discharge of efflu- ents with high nutrient content, the occupation of large areas, natural habitat alternation and the escape of exotic species. Biofloc technology (BFT) is an aqua- culture tool that requires minimal water exchange, promotes the nutrient recy- cling optimizing resources and produces natural food in situ by forming suspended microbial aggregates in the water (bioflocs). These microorganisms provide multiple benefits such as water quality control, pathogen resistance and nutritional supplementation. Species such as Litopenaeus vannamei and tilapia have been successfully applied in BFT. In addition, there are also an increasing number of studies focused on alternative species with promising results. This paper describes essential aspects of biofloc technology, its application in aquacul- ture and the potential to extend its benefits to new aquaculture species such as Chilean river shrimp Cryphiops caementarius. This paper describes the future challenges of this technology as well as opportunities for its application