Ippon hi

         Solid red from the nose to the caudal fin

 Nidan

 Two-step pattern

 Sandan

 Three-step pattern

 Yondan

 Four-step pattern

 Gondan

 Five-step pattern

Cha

Brown

Gin

Silver

Hi

Red

Ki 

Yellow

Kin 

Gold

Sumi 

Black

Budu 

Purple 

Shiro

White 

Midori

Green 

Ai 

Blue

Nezu 

Grey

Beni

Red

AiGoromo 

Indigo Blue

Orenji

Orange

Platinum

Metallic White

 Koi Age

Explanation

Tosai 

One year old Koi 

Nisai

Two year old Koi 

Sansai

Three year old Koi 

Yonsai 

Four year old Koi 

Gosai

Five year old Koi 

Rokusai

Six year old Koi