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The 2008 global returns for fish farming recorded by the FAO totaled 33.8 million tonnes worth about US$60 billion. [6] Although fish farming for food is the most widespread, another major fish farming industry provides living fish for the aquarium trade.
World capture fisheries and aquaculture production by species group [1]. The global commercial production for human use of fish and other aquatic organisms occurs in two ways: they are either captured wild by commercial fishing or they are cultivated and harvested using aquacultural and farming techniques.
The Japanese began experimental krill fishing operation in the area in 1972 and started full-scale commercial operations in 1975. Krill catch increased rapidly. In the 1980s, a few additional nations started operating in the area: Poland, Chile, and South Korea. Their catches amounted to a few thousand tonnes annually; the lion's share went to ...
Aquaculture (less commonly spelled aquiculture [1]), also known as aquafarming, is the controlled cultivation ("farming") of aquatic organisms such as fish, crustaceans, mollusks, algae and other organisms of value such as aquatic plants (e.g. lotus).
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 practice, these MPAs are defined areas where natural and/or cultural resources are given more protection than occurs in the surrounding waters. United States MPAs cover many habitats including the open ocean, coastal areas, intertidal zones, estuaries, and the Great Lakes. They vary in purpose, legal authorities, agencies, management ...
This farming in a marine environment is known as mariculture. There they are fed pelleted feed for another 12 to 24 months, when they are harvested. [9] Norway produces 33% of the world's farmed salmonids, and Chile produces 31%. [10] The coastlines of these countries have suitable water temperatures and many areas well protected from storms.
Crab fisheries are fisheries which capture or farm crabs. True crabs make up 20% of all crustaceans caught and farmed worldwide, with about 1.4 million tonnes being consumed annually. The horse crab, Portunus trituberculatus, accounts for one quarter of that total.