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.

These colorful patches appear with shimmering, iridescent scales. More expensive koi betta fish might have splashes of blue, green, pink, or purple. Koi betta fish tend to be aggressive and unfriendly ...

Donor-Advised Funds Support KQED by using your donor-advised fund to make a charitable gift. If you take a walk around San Francisco, it won’t take long before you see a koi fish. Not a real one, of ...

In areas of the country where the temperature stays below freezing for extended periods, koi owners bring their fish indoors and keep them in large aquariums. The greatest challenge is providing ...

On Friday, it featured an orange bodice with an ivory and blue skirt. Fans immediately recognized the color scheme as the same on her iconic Koi fish-printed guitar. “Can we call this dress the ...