INSIDER - This fish sold for $1.8 million — here's why some koi fish are so expensive

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INSIDER - This fish sold for $1.8 million — here's why some koi fish are so expensive

INSIDER - This fish sold for $1.8 million — here's why some koi fish are so expensive

  • TV-G
  • 2019
  • 5mins
Koi fish are colorful patterned common carp that are now celebrated in annual koi shows and kept in ponds all over the world. Some are worth millions.