| Common name | Kuroguchi |
| Language | Japanese |
| Type | Vernacular |
| Official trade name | No |
| Rank | 2 - (Preferred common name (unique)) |
| Country | Japan |
| Locality | |
| Ref. | Sasaki, K. and P.J. Kailola, 1988 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | color pattern(s) |
| 1st modifier | |
| 2nd modifier | |
| Remarks | 'black mouth' |