5.9 Explain the methods which are used to farm large numbers of fish to provide a source of protein, including maintenance of water quality, control of intraspecific and interspecific predation, control of disease, removal of waste products, quality and frequency of feeding and the use of selective breeding

·         Fish farming-low fat and high protein.

·         They are efficient of turning there nutrients into fish mass.

·         Plus side fish farming allowed us to control quality of water-clean, we can control predators, we can reduce pests and another form of diseases.

·         By controlling these factors we contributed to an increase of a yield of fish.

·         High density of fish than the possibility is the transmitting use anti-biotic for human health make pests so, farmer use pesticides and it’s also concerned among human.