| Common name | Big-head seahorse |
| Language | English |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | Australia |
| Locality | |
| Ref. | Kuiter, R.H., 2001 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | |
| 1st modifier | |
| 2nd modifier | |
| Remarks | Name applied to Hippocampus grandiceps. |