＜正＞1. Koi fish farming has a long and impressive history.锦鲤养殖有着悠久而令人印象深刻的历史.Koi fish is what we would call a "happy accident". In the 1600 s, Japanese carp hobbyists began noticing an unusual fish.Laura Hilstrom is Head of the Department of Herpetology＆Ichthyology at San Diego Zoo in California, USA. She said, "The most popular koi fish today are actually domesticated carp."
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