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Aquaculture is the most rapidly expanding food industry in the world [7] as a result of declining wild fisheries stocks and profitable business. [2] In 2008, aquaculture provided 45.7% of the fish produced globally for human consumption; increasing at a mean rate of 6.6% a year since 1970.
Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture , which is the controlled cultivation and harvesting of aquatic animals such as fish, crustaceans , molluscs and so on, in natural or pseudo-natural environments.
Seaweed farming is profitable even at a small scale, to the point that the small cost of investment is exceeded by the revenue from the first harvest (105–135 days). Caulerpa and Eucheuma are the most profitable, followed by Gracilaria. Gracilaria grows better in canals with flowing water than in still ponds. [16]
Marine shrimp farming is an aquaculture business for the cultivation of marine shrimp or prawns [Note 1] for human consumption. Although traditional shrimp farming has been carried out in Asia for centuries, large-scale commercial shrimp farming began in the 1970s, and production grew steeply, particularly to match the market demands of the United States, Japan and Western Europe.
This results in a profitable family business which conforms to traditional discourses of "family farms", increasing the likelihood of sea sponge aquaculture adoption. In addition, it is common for sea sponge farms to be located close to family homes allowing for continual access, monitoring, modification and work to be completed on the farm. [6]
In 2018, Canada's fishing industry was worth $36.1 billion in fish and seafood products and employed approximately 300,000 people. [1] Aquaculture, which is the farming of fish, shellfish, and aquatic plants in fresh or salt water, is the fastest growing food production activity in the world and a growing sector in Canada.
Sustainable fish farming practices do not use dangerous chemicals, hormones, or antibiotics on their fish, which benefits the surrounding marine environment, and the human consumers themselves. In addition to this, sustainable fish farming is able to control what their fish eat: farmers will take care to keep the fish's diet healthy and balanced.
Whether octopus farming is profitable depends in large part on how much it costs to maintain a steady supply of crustaceans. [25] Economic profitability can be maximized without significantly compromising biological productivity by incorporating a mix of fish and crustacean-based feed strategies.