Extensive aquaculture means that the fish are farmed in a natural place like lakes, rivers and oceans. Pipeline Fish FarmingIn this method fish are raised in water and feed on its own, which is then used to grow small plants that planktons insects. It is inexpensive and does not need much in the way of specialized equipment. But the fish grow slowly and not all that many are raised — a problem if you depend on what little money might be saved from selling them. This has led to the exploitation of many natural water bodies for enough fish.
More specifically, fish are cultivated in special tanks or ponds that people build and regulate for intensive aquaculture. This is when the farmers feed them with food that makes them grow rapidly. The water in the tanks is cleaned and treated so that it gives perfect living conditions for all fish. It does produce a lot of fish, which helps to meet the large demand for seafood however it requires quite an amount of resources including electricity, water and feeding. Because of these requirements sometimes intensive aquaculture has a larger environment impact.
There are a few advantages to intensive aquaculture that makes it popular with some farmers. The aquaculture system is cheap which makes it possible even for small-scale farmers to start culturing fish. It uses relatively low amounts of both electricity and water grinding, which is a significant quality in locations where those resources are precious. Widespread aquaculture also has flow-on impacts in supporting the integrity of natural environments such as wetlands and coastal regions that benefit from biological processes supportive of these habitats.
While there are, however some limitations to intensive aquaculture as well. The big problem here is that it's not very fish-productive, so a lot of waterbodies would need to be called into service in order to get enough seafood for everyone. Weather or climate changes can affect the natural food sources that fish rely on, which causes problems. Lastly, large-scale aquaculture can also be a vessel for disease in fish that ultimately could be transferred to wild populations of the animal.
In contrast, there are also some problems with intensive aquaculture. High resource usage requirements (e.g. electricity and water) can have an environmental impact in locations where resources are limited, to begin with Nothing good in the wild is free: Fishmith explains that waste products, including excess food and fish sewage, can accumulate in the water—contributing to pollution and disrupting local ecosystems.
Semi-intensive (referred to in the industry as partial ~) aquaculture is an ideal system for small farms: it has many of the advantages of both extensive and intensive methods. In this method, fish is continuously stocked in ponds or tanks while permitting natural food production as supplementary feeding. The water is treated but not with the same extent as in intensive aquaculture. This allows farmers to give the fish a good environment while saving costs.
Every method in aquaculture has its pros and cons. The choice of method will depend on a variety of factors including: available resources, the species that is being farmed and how many types are required. Large-scale aquaculture is a cheap option that suitable for small projects and where products are needed locally. Mainly produces fish in high quantities well suited to be developed on a larger commercial scale - called as Intensive aquaculture. Semi-intensive aquaculture provides an intermediate pathway perfect for smaller producers.
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