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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.
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.
By creating a closed system, fish farming has given locational freedom to the practice allowing for more inland developments. [1] [predatory publisher] In countries like Japan, saltwater species are much more popular than freshwater fish which has spurred much of the desire for saltwater aquaponics systems. [2]
Raising fish in cages in a lake in a relatively undeveloped environment. Urban aquaculture employs water-based systems, the most common, which mostly use cages and pens; land-based systems, which make use of ponds, tanks and raceways; recirculating systems are usually high control enclosed systems, [clarification needed] whereas irrigation is used for livestock fish.
In California, for example, 15 fish farms produce tilapia, bass, and catfish with warm water from underground. This warmer water enables fish to grow all year round and mature more quickly. Collectively these California farms produce 4.5 million kilograms of fish each year. [161]
The number of individual fish caught in the wild has been estimated at 0.97–2.7 trillion per year (not counting fish farms or marine invertebrates). [11] Following is a table of the 2011 world fishing industry harvest in tonnes (metric tons) by capture and by aquaculture. [10]
California farms produce 90% of all U.S.-grown avocados, with the great majority being of the Hass variety. [14] In 2021 [15] the state harvest was 135,500 short tons (122,900 t) on 46,700 acres (18,900 ha) for a yield of 2.9 short tons per acre (6.5 t/ha), and at $2,430 per short ton ($2,679/t) that brought $327,369,000.
Issues outside the scope of this WikiProject include fishkeeping (fish aquarium topics), fishing, fisheries, fish cuisine topics, fish farm topics, fish market topics, fish processing topics, fish product sales topics, fish products topics, and fish trap topics. At the end of October 2021, there were 33,888 articles within the project's scope.