What is Fish Production?
What is Fish Production?
Fish are a very high source of proteins and have great nutritional value. Fish production was initially dependent on fish capturing. However, most of the captured fish were used for industrial purposes and were hardly consumed by man. Therefore, an alternative method to increase fish production was devised that includes farming and husbandry of economically important aquatic organisms. This is known as aquaculture.
Methods of Fish Production
Fish production can be done in two ways:
Naturally occurring fish are harvested by capture fishery. Capture fishery is sometimes also known as wild fishery.
This is the controlled cultivation of fish in water bodies. It can also be referred to as fish farming or pisciculture. Note that pisciculture is a form of aquaculture as aquaculture is the scientific rearing and management of all aquatic animals.
About half the fish consumed today is raised globally through fish farming. Some of the common fish species that are farmed include tuna, salmon, halibut, cod, and trout. The aquafarms can be in the form of mesh cages submerged in water or concrete enclosures on land. However, the fish farms can damage the ecosystem by introducing diseases, pollutants and invasive species.
Methods of Fish Farming
Fish farming involves the following methods:
Extensive Fish Farming
In this type of farming, economic and labour inputs are low. The natural food production plays a major role in this type of farming. Fertilizers may be added to increase the fertility and hence, the production of fish.
Semi-intensive Fish Farming
This method implies moderate levels of economic and labour inputs. The production can be increased by supplementary feeding or addition of fertilizers. Thus, the production of fish is higher.
Intensive Fish Farming
In this method, the fish are stocked with as many fish as possible. The fish are fed with supplementary feed.
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Anna D Parker
Journal of Fisheries Research