Eco-friendly is a concept that refers to actions, products, or lifestyles that have minimal impact on an environment. This eco-friendly concept is based on the awareness of the importance of preserving nature for future generations. So in other words, eco-friendly behavior aims to reduce damage to ecosystems and ensure the sustainability of natural resources. Fish farming has recently become the center of attention, this sector has grown rapidly characterized by various applications of modern farming technologies, namely implementing environmentally friendly fish farming with the method of water recirculation fish farming and biofloc fish farming. This recirculation and biofloc fish farming system is an environmentally friendly closed system fish farming. Recirculation and biofloc fish farming are innovative environmentally friendly methods. Biofloc fish farming: This method is widely used in tilapia farming because it can increase productivity and minimize land use. Biofloc allows fis...