Kohaku is one of the earliest born Koi varieties, it is the most well-known and basic variety, because some varieties are developed from Kohaku.
Kohaku means “red and white”. It has ceramic-like white skin, with large and separate red patterns overlay. According to the number and shape of patterns, Kokaku can be further distinguished to Kuchibeni-Kohaku, Nidan-Kohaku, Sandan-Kohaku, Yodan-Kohahu, Inazuma, Straight Hi, Napoleon, Gotenzakura, Kinsakura and so on.
Image above is a Yodan-Kohaku that was awarded.
“Kuchibeni” means lipstick. The obvious characteristic is the small red pattern around the mouth, like lipstick.
Nidan-Kohaku, Sandan-Kohaku, Yodan-Kohahu
“Nidan”, “Sandan” & “Yodan” come from the terms of Karate, they mean Two-stage, Three-stage & Four-stage. The difference of these three varieties is the number of separate red patterns. Nidan-Kohaku has two separate red patterns. Sandan-Kohaku has three red patterns. And the number of Yodan-Kohahu is four.
Inazuma means lightning strike. This kind of Kokaku has a unique red pattern shaped like lightning strike, covering from the head to the back.
“Hi” is red patterns. Straight Hi has a whole red pattern covering from head to caudal peduncle without interruption in the middle.
It named after the irregular shape of the red pattern on the abdomen. Some people think it looks like Napoleon’s hat from France.
“Gotenzakura” is a combination of “Gotem” and “Sakura”, the literal meaning is palace and cherry red. With the dorsal fin as the center line, the small red patterns are arranged symmetrically and neatly. The patterns on the shoulder are bigger than the ones on dorsal fin and caudal fin. It feels like the officials in the palace line up strictly according to rank.
Kinsakura is a special kind of Gotenzakura. The edges of the scales inlaid with thin golden lines.