These polychromatic swimmers are definitely deserving of admiration. Koi fish have got a lot going for them. "[They are] not only a pet, but also art," says Taro Kodama, president of Kodama Koi Farm . "They are called living jewels — beautiful as one koi, even more beautiful as a group."

"They are beautiful, gentle, docile fish that are relatively easy to maintain with the proper space, water filtration and food," says Laura Hilstrom, Aquatics Lead in the Department of Herpetology & Ichthyology at the San Diego Zoo . "Koi can be easily trained to eat right out of your hand. Watching koi swim can be both a mesmerizing and calming experience and koi keepers are known for taking great pride in the care of their aquatic pets."

Here are just a few fun facts about these beautiful, resili

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