| Scientific Name | Author | English Name |
|---|---|---|
| Dallia admirabilis | Chereshnev, 1980 | |
| Dallia delicatissima | Smitt, 1881 | |
| Dallia pectoralis | Bean, 1880 | Alaska blackfish |
| Novumbra hubbsi | Schultz, 1929 | Olympic mudminnow |
| Umbra krameri | Walbaum, 1792 | Mudminnow |
| Umbra limi | (Kirtland, 1840) | Central mudminnow |
| Umbra pygmaea | (DeKay, 1842) | Eastern mudminnow |