| Common name | Magnahac |
| Language | Chamorro |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Guam |
| Locality | |
| Ref. | Quoy, J.R. and P. Gaimard, 1824 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | |
| 1st modifier | |
| 2nd modifier | |
| Remarks | Name applied to this species in the early 1800s by the islanders; this species was an important source of protein to the islanders: once a year, for 3-4 days, the myriades swarming along the shorelines (of same lengths) are harvested with fish nets; these are then sun-dried, salted and/or marinated in vinegar with aromatic herbs. |