| Common name | Bigok |
| Language | Bikol |
| Dialect | Sagnay |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Territory | Philippines |
| Locality | Batan and Rapu-Rapu; Catanduanes; San Miguel and Caragay Island |
| Ref. | Pollnac, R.B. and M.L.G. Gorospe, 1998 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | |
| 1st modifier | |
| 2nd modifier | |
| Remarks |