Aquaculture can be done in the ocean, lakes or on land or rather, on a natural or artificial lake, in freshwater or the sea. Even while today’s aquaculture landscape, fish farming is a crucial part of global food sustainability activities. It is sad that despite the conventional advances in agricultural techniques, aquaculture systems has evolved slowly. Here are some of the most common aquaculture techniques in the world:
The pond system is the oldest technique that still works today. This system is common in developing countries where there are few wild fish. The method relies on clay-based soils, and in that way, are self-contained. The practice is a favorite for farmers as it befits different types of fish at one go. However, the practice of fish farming in ponds is common for farming freshwater fish species.
The Open-net Pens are a high-risk method that involves fish farming on the offshore, in coastal areas or freshwater lakes. The technique is common for rearing salmon fish and is high-risk as it allows free exchange of waste, chemicals, parasites, and diseases.
Submersible Net Pens
This method is similar to the open-net method. The only difference is that with the submersible net pens are larger, and usually fully underwater. This way, the fish are less likely to escape.
The re-circulation system works more or less like a high-tech pond. The technique involves creating water reservoirs and joining them to nearby water bodies like rivers. In this method, the fish farmers treat water and then re-circulate it. It is a very conservative method because there is minimal wastewater discharge. Right before water is discharged to natural water bodies, it is treated, which lowers pollution and parasite transfer. Farmers love this method because it gives them total control over the fish, positively influencing the profitability of the fish farm.
Shellfish farming is a little different from all the other methods. Technically, this aquaculture method is about the passive collection of spat. The spat then attaches to individual collectors, like cups, ropes, plastic trays or in mesh bags and sticks. This kind of suspended farming is common for shellfish such as oysters, clams, scallops, mussels, among other bivalves.
With availability of technologies such as VPN port, you can access as much information as you need regarding aquaculture, and use the tips and insights you get to make this your major economic activity. Good luck!