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Fish slaughter
Fish slaughter is the process of killing fish, typically after harvesting at sea or from fish farms. At least one trillion fish are slaughtered each year for human consumption. Some relatively humane slaughter methods have been developed, including percussive and electric stunning. However, most fish harvesting continues to use methods like suffocation in air, carbon-dioxide stunning, or ice chilling that may not optimise fish welfare in some instances.
==Numbers==
(詳細はFood and Agriculture Organization (FAO), a total of 156.2 million tons of fish, crustaceans, molluscs, and other aquatic animals were captured in 2011. This is a sum of 93.5 million tons of wild animals and 62.7 million tons of farmed animals. 56.8% of this total was freshwater fish, 6.4% diadromous fish, and 3.2% marine fish, with the remainder being molluscs, crustaceans, and miscellaneous.
The number of individual wild fish killed each year is estimated as 0.97-2.74 trillion (based on FAO tonnage statistics combined with estimated mean weights of fish species).〔 The FAO numbers do not include illegal, unreported and unregulated fishing, nor discarded fish. If these are included and over-reporting by China subtracted, the totals increase by about 16.6% to 33.3%. A similar estimate for the number of farmed fish slaughtered each year is 0.037 to 0.120 trillion.
Mid-sized trout farms in the UK may process more than 10,000 fish per hour. They are often operated by only a few people, and it may be necessary to kill trout on short notice or even at night.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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