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| No. | Valid Name | Author | English Name |
| 1. | Hephaestus adamsoni | (Trewavas, 1940) | Adamson's grunter |
| 2. | Hephaestus carbo | (Ogilby & McCulloch, 1916) | Coal grunter |
| 3. | Hephaestus epirrhinos | Vari & Hutchins, 1978 | Longnose sooty grunter |
| 4. | Hephaestus fuliginosus | (Macleay, 1883) | Sooty grunter |
| 5. | Hephaestus habbemai | (Weber, 1910) | Mountain grunter |
| 6. | Hephaestus jenkinsi | (Whitley, 1945) | Western sooty grunter |
| 7. | Hephaestus komaensis | Allen & Jebb, 1993 | |
| 8. | Hephaestus lineatus | Allen, 1984 | Lined grunter |
| 9. | Hephaestus obtusifrons | (Mees & Kailola, 1977) | |
| 10. | Hephaestus raymondi | (Mees & Kailola, 1977) | Raymond's grunter |
| 11. | Hephaestus roemeri | (Weber, 1910) | Röemer's grunter |
| 12. | Hephaestus transmontanus | (Mees & Kailola, 1977) | Sepik grunter |
| 13. | Hephaestus trimaculatus | (Macleay, 1883) | Threespot grunter |
| 14. | Hephaestus tulliensis | De Vis, 1884 |