| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Merga crassocanalis Huang, Xu & Huang, 2019 |
Western Central Pacific | ||
| Merga longicosta Xu, Huang & Wang, 2020 |
Western Central Pacific | ||
| Merga reesi Russell, 1956 |
Northeast Atlantic and Eastern Pacific | 1 | |
| Merga tergestina (Neppi & Stiasny, 1912) |
Southwest Atlantic and the Mediterranean | 0.4 | |
| Merga violacea (Agassiz & Mayer, 1899) |
Western Pacific, Western Atlantic and the Mediterranean | 0.7 |