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Catch and release is a practice within recreational fishing intended as a technique of conservation. After capture, the fish are unhooked and returned to the water before experiencing serious exhaustion or injury. Often, a fast measurement and weighing of the fish is worthwhile. Using barbless hooks, it is often possible to release the fish without removing it from the water (a slack line is frequently sufficient). ==History of practice== In the United Kingdom, catch and release has been performed for more than a century by coarse fishermen in order to prevent target species from disappearing in heavily fished waters. Since the latter part of the 20th century, many salmon and sea trout rivers have been converted to complete or partial catch and release. In the United States, catch and release was first introduced as a management tool in the state of Michigan in 1952 as an effort to reduce the cost of stocking hatchery-raised trout. Anglers fishing for fun rather than for food accepted the idea of releasing the fish while fishing in so-called "no-kill" zones. Conservationists have advocated catch and release as a way to ensure sustainability and to avoid overfishing of fish stocks. Lee Wulff, a New York based fly angler, author and film maker, promoted catch and release as early as 1936 with the phase "Game fish are too valuable to be caught only once." Don Martinez a West Yellowstone, Montana fly shop owner promoted catch and release in his 1930-40s newsletters sent to Eastern anglers. In Australia, catch and release caught on slowly, with some pioneers practicing it in the 1960s, and the practice slowly became more widespread in the 1970s and 1980s. Catch and release is now widely used to conserve — and indeed is critical in conserving — vulnerable fish species like the large, long lived native freshwater Murray Cod and the prized, slowly growing, heavily fished Australian bass, heavily fished coastal species like Dusky Flathead and prized gamefish like striped marlin. In the Republic of Ireland, catch and release has been used as a conservation tool for atlantic salmon and sea trout fisheries since 2003. A number of fisheries now have mandatory catch and release regulations.〔(Catch and Release for Atlantic Salmon ) Central Fisheries Board Website〕 Catch and release for coarse fish has been used by sport anglers for as long as these species have been fished for on this island. However catch and release for Atlantic salmon has required a huge turn about in how many anglers viewed the salmon angling resource. To encourage anglers to practice catch and release in all fisheries a number of Government led incentives have been implemented.〔(Catch and Release Incentive Scheme ) Central Fisheries Board Website〕 In Canada, catch and release is mandatory for some species. Canada also requires, in some cases, the use of barbless hooks to facilitate release and minimize injury. In Switzerland and Germany, catch and release fishing is considered inhumane and is now banned.〔(Animal Rights Law Passed in Switzerland - Catch and Release Fishing Banned )〕 In Germany, the ''Animal Welfare Act'' states that ''"no-one may cause an animal pain, suffering or harm without good reason"''.〔(German Animal Welfare Act )〕 This leaves no legal basis for catch and release due to its argued inherent lack of "good reason", and thus personal fishing is solely allowed for immediate food consumption. Additionally, it is against the law to release fish back into the water if they are above minimum size requirements and aren't a protected species or in closed season. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Catch and release」の詳細全文を読む スポンサード リンク
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