n = 7
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Hemilepidotus gilberti | Jordan & Starks, 1904 | Hemilepidotus gilberti | Cottidae | Gilbert's Irish Lord |
| Hemilepidotus hemilepidotus | (Tilesius, 1811) | Hemilepidotus hemilepidotus | Cottidae | Red Irish lord |
| Hemilepidotus jordani | Bean, 1881 | Hemilepidotus jordani | Cottidae | Yellow Irish lord |
| Hemilepidotus papilio | (Bean, 1880) | Hemilepidotus papilio | Cottidae | Butterfly sculpin |
| Hemilepidotus spinosus | Ayres, 1854 | Hemilepidotus spinosus | Cottidae | Brown Irish lord |
| Hemilepidotus trachurus | (Pallas, 1814) | Hemilepidotus hemilepidotus | Cottidae | Red Irish lord |
| Hemilepidotus zapus | Gilbert & Burke, 1912 | Hemilepidotus zapus | Cottidae | Longfin Irish lord |