Dallia

Dallia is a genus of mudminnows native to Russia and Alaska. Molecular data indicates the genus is more closely related to Esox and Novumbra than Umbra. ''Dallia diverged from Novumbra + Esox'' approximately 66 million years ago. The genus was named after American naturalist William Healey Dall.

Species

Three species in this genus are recognized:

Dallia admirabilis Chereshnev, 1980
Dallia delicatissima Smitt, 1881
Dallia pectoralis T. H. Bean, 1880

Mitochondrial sequence data was examined from D. pectoralis and D. admirabilis and did not indicate that speciation within the genus in Russia; however, genetic isolation within Alaska for populations of D. pectoralis could be high and associated with karyotype differences.
Fossil remains of Dallia are known from the Late Miocene near Homer, Alaska, suggesting they were found further south in the past. Pleistocene-aged fossil remains also suggest they ranged significantly more west in Siberia as well.