The Naming of the Varieties
The first part of the name commonly refers to the SCALE TYPE
In Koi there are three main scale types to be found on quality fish.
ALMOST DEVOID OF SCALES.
WARRIOR SCALED, OR WALL SCALED.
Because Japanese Fully Scaled is considered to be the norm for Koi, where the fish have this scale type it is not named. You can therefore safely assume that if the scale type is not part of the name, then the fish is fully scaled.
CLASS 1: KOHAKU
White skinned fish, with red pattern.
CLASS 2: TAISHO SANKE
White skinned fish with red and black pattern
CLASS 3:SHOWA SANSHOKU
Black skinned fish with red and white. (rarely yellow and white)
White skinned fish with black blobs, over white, yellow, orange or red ground.
Black skinned with triangular patterns in white, yellow, orange or red.
&Black skinned with blue back and flame orange belly and points.
Doitsu version of above.
White skinned fish with Kohaku-type red pattern covered with a black or blue net.
All the non-metallic fish which do not fit into any of the above and also all the crow line black fish. (The too-hard basket!)
White skinned, one colored metallic and their Matsubas (pinecone pattern).
CLASS 10:HIKARI MOYOMONO
White skinned, with two or more colours.
CLASS 11:HIKARI UTSURIMONO
Black skinned, with two or more colours.
All the fish with Ginrin scales.
All the fish with one head spot and none of that colour elsewhere