We couldn't cut the line to release the fish because it ended with the steel leader.

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Hydropower dams are unpopular with conservationists because they disrupt river ecosystems, kill spawning fish populations, and release large amounts of methane from decaying vegetation along riverbeds.

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In Myanmar, where Buddhist temples and monks proliferate, merit is attained through good deeds such as the release of caged birds and trapped fish.

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Referring to possible future changes to fish conservation law, Ms Ni Chuilin said, "it isn't just catch and release, it may involve not catching salmon at all".

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The upward trend in catch and release is therefore welcome and demonstrates that anglers are very aware of the need to sustainably fish salmon and sea trout.

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