| Word(Pronunciation) | Meaning |
| Agi
(ah' gi ) | Chin. This term refers not only to the koi's chin, it also means the entire side of the face including the gill covers. |
| Agi Zumi
(ah' gi zoo' mee) | Chin zumi. Agi refers to the chin and both sides of the face including the gill covers. Agi Zumi means Sumi appearing on these parts. |
| Ai
(eye) | Indigo blue color. As seen in the ground color of Asagi, or accents on Aigoromo. |
| Aigoromo
(eye' go row mow) |  Indigo netting pattern on the Hi plates of a Kohaku pattern. |
| Ai-no-Fuki
(eye' no foo' key) | Appearance of indigo crescents on the Hi plates, such as in Aigoromo. |
| Ai-no-Fukidashi | Ai starts appearing. |
| Ai-Sashi | Blue Sashi. The Sashi seen in Aigoromo. |
| Aka(ah'ka) | A general word meaning red. |
| Aka Hajiro
(ah' ka ha' jee row) | Red Koi with white fins and Motoaka at the base of the pectoral fins, developed from Benigoi. |
| Akame Kigoi
(ah ka' meh key' goy) |  Red-eyed Kigoi. |
| Aka Muji
(ah' ka moo' jee) | Red normally scaled Koi, also called Higoi. |
| Aka Sanke
(ah' ka sahn' keh) | Red Sanke. Aka is a term meaning red. A Taisho Sanshoku (Sanke) with a majority of Hi and very little Shiroji. It is not a variety name, but rather a description. Although the lack of Shiroji makes the Koi appear less dignified, it projects a dynamic and powerful image. There are many distinguished Aka Sanke with high quality Hi. |
| All Japan Combined Nishikigoi Show | The biggest Koi show held by Shinkokai (All Japan Nishikigoi Promotion Association) in Tokyo on the fourth Saturday and Sunday of every January. It is also called Tokyo Taikai. The 37th show will take place in 2005. The show is open to entries from both amateurs and professionals. This show has the highest level of Nishikigoi in Japan. |
| All Japan Combined Young Nishikigoi Show | All Japan Nishikigoi Show by Shinkokai for young Koi up to 63cm(25.2inch.). |
| All Japan Nishikigoi Show | All Japan Nishikigoi Show by Zen Nippon Airinkai or ZNA or All Japan Combined Nishikigoi Show by Shinkokai or All Japan Nishikigoi Promotion Association |
| Amime(ah' me meh) | Netting. Nishikigoi are covered with scales, and sometimes the scalation looks like a beautiful netting pattern. This is called Amime |
| Aoji(ah' oh jee) | Blue ground. Sumi that has not yet emerged to the surface on the body. It is also called Soko Zumi (Soko means bottom). It is primarily seen in Shiroji and appears to be a transparent blue. It indicates unfinished Sumi. This term is only used for varieties with Sumi such as Taisho Sanshoku (Sanke). When the Aoji emerges,the Koi will be complete |
| Asagi(ah' sah gee) |  Blue Koi with a red belly, the primary pattern is the Fukurin that appears as a light net pattern over an indigo base, clear white head, may have Motoaka, very old variety. |
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