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 are an attractive product for farmers since they have low fat and high protein. Also they are efficient at turning their nutrient into fish mass.
- Fish farming allows us to control the quality of water (we want it to be clean)
- We can control predators
- We can reduce pests and other forms of disease
By controlling all these factors we contribute to an increase in the yield of fish. However where you have a high density of fish there is a higher chance of the transmission of diseases. That is why some fish farmers use antibiotics, this is a concern to human health.
The abundance of fish within a farm makes pests common which leads to farmers using pesticides which is also a concern to human health
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