What do the Japanese terminology mean?
 
ai - Indigo
aka - Red over entire Koi
bekko - Black & White
beni - Dark Red
budo - Grape
cha - Brown
doitsu - Scale-less or mirror
gin - Metallic Silver
ginrin - Silver reflective scales
godan - 5 step
hi - Red spot(s)
hikari - Shiny
inazuma - Lightning pattern
karasu - Black over entire Koi
ki - yellow
kin - Metallic Gold
kin Rin - Gold reflective scales
kuchibeni - Lipstick - The term is also widely used to describe koi with hi on the mouth
maruten - Literally means crown.  The term is used widely to describe koi with a tancho-like hi pattern on the head
matsuba - Pine cone pattern
midori - green
muji - One color
moyo - Type of pattern
nezu - Grey
nidan - 2 Step
nissai - 2 Year old koi/koi in their second year
orenji - Orange
rin - Scale
sandan - 3 Step
shiro - White
shoku - Color
sumi - Black spot(s)
tosai - 1 Year old koi/koi in their first year
utsuri - Reflective
yondan - 4 Step