For example, there are koi with light blue spots, ones with large red patches on their backs, or all-metallic gold. But the most winning fish often just boil down to these three varieties.

Do you have backyard koi ponds on your water features Pinterest board? These insider insights will help you decide if one is ...

Koi fish have got a lot going for them ... yellow, black, white and blue. "There are more than 100 varieties in koi, but they are all the same species," Kodama says. "They are carp, they ...