Koi fish come in a multitude of beautiful colors and patterns often referred to by their Japanese names. This is a list of koi varieties with some examples for sale and a description with their Japanese names.
“Bekko” are a koi with black (sumi) markings over a solid color. They come in red (hi) also known as - aka - “Aka Bekko” or yellow (ki) Ki Bekko”, or white (shiro) Shiro Bekko”.
“Bekko” are sometimes confused with “Utsuri“, which is a solid black color koi which has red, yellow or white markings over the solid black.
Doitsu meaning “Germany” is a German carp cross breed with a Japanese carp beginning in 1904 when they were brought in by Shinnosuke Matsubara who hoped to improve Japan's supply of edible fish meat.
“Doitsu” are a koi that is only partially scaled over their thick skin sometimes reffered to as “leather”. They come in a wide variety of scale patterns and classifications with “Doitsu“ as the start of their name. They can create strong sharply defined patterns with bold contrasts.