Dallia
| Dallia Temporal range:
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| Dallia pectoralis | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Salmoniformes |
| Family: | Esocidae |
| Subfamily: | Dalliinae Jordan, 1885 |
| Genus: | Dallia T. H. Bean, 1880 |
Dallia (Blackfish) 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.[1][2] Dallia diverged from Novumbra + Esox approximately 66 million years ago.[2] The genus was named after American naturalist William Healey Dall.[3]
Species
[edit | edit source]Three species in this genus are recognized:[4]
- Dallia admirabilis Chereshnev, 1980 (Amguema blackfish)
- Dallia delicatissima Smitt, 1881 (Pilkhykay blackfish)
- Dallia pectoralis T. H. Bean, 1880 (Alaska blackfish)
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.[5][6][7][8]
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.[9]
References
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