5.7 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

5.7 •maintenance of water quality 

                •pollution caused by faeces ruining the environment, reducing oxygen 

                •chemicals eaten by the fish affect the water 

                •pooing all in one area destroys the water quality 

      •control of intraspecific predators

                •providing plenty of food 

                •regular separation of different sized and aged fish 

                •sorting through sizes 

      •control of interspecific predators

                •cage, net 

                •shark repellents 

      •controlling disease 

                •using chemicals 

                •fish kept in cages are more prone to disease 

                •use pesticides to kill pests e.g sea lice and biological pest control to avoid pollution 

                

      •removal of waste 

                •drops through open ended cages 

      •quality and frequency of feeding 

                •conversion of ratio since they are cold-blooded and grow quickly 

                •the better the quality of feed, the quicker and bigger their growth 

      •selective breeding 

                •size

                •fat:meat ratio 

                •disease and temperature resistant