The nation’s top koi aficionados will bring their most spectacular fish — up to 3 feet long — to South San Jose to compete ...

and how gracefully the fish moves in the water. But the most important trait of all is the koi's coloring. The best koi have a good balance of colors and patterns according to their variety.

This style has a grey-blue coloring with a red pattern down its body. 5. Platinum Ogon Is an Incredibly Desired Species Most people imagine brightly colored koi fish with amazing patterns on their ...