Dallia

Genus of fishes

Dallia

Temporal range: Late Miocene–present

PreꞒ

Dallia pectoralis
Scientific classification
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

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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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1. ^ López JA, Chen WJ, Ortí G (2004). "Esociform Phylogeny". Copeia. 2004 (3): 449–464\. doi:10.1643/cg-03-087r1. S2CID 198150295.
2. ^ a b Campbell MA, López JA, Sado T, Miya M (November 2013). "Pike and salmon as sister taxa: detailed intraclade resolution and divergence time estimation of Esociformes + Salmoniformes based on whole mitochondrial genome sequences". Gene. 530 (1): 57–65\. doi:10.1016/j.gene.2013.07.068. PMID 23954876.
3. ^ "Family ESOCIDAE Rafinesque 1815 (Pikes and Mudminnows)". The ETYFish Project. 2024-10-04. Retrieved 2025-04-14.
4. ^ Froese, Rainer; Pauly, Daniel, eds. (2012). "Species in genus Dallia". FishBase.
5. ^ Campbell MA, Lopéz JA (February 2014). "Mitochondrial phylogeography of a Beringian relict: the endemic freshwater genus of blackfish Dallia (Esociformes)". Journal of Fish Biology. 84 (2): 523–38\. Bibcode:2014JFBio..84..523C. doi:10.1111/jfb.12314. PMID 24490938.
6. ^ Campbell MA, Sage GK, DeWilde RL, López JA, Talbot SL (2013-12-05). "Development and characterization of 16 polymorphic microsatellite loci for the Alaska blackfish (Esociformes: Dallia pectoralis)". Conservation Genetics Resources. 6 (2): 349–351\. doi:10.1007/s12686-013-0091-6. ISSN 1877-7252. S2CID 16876417.
7. ^ Campbell MA, Takebayashi N, López JA (July 2015). "Beringian sub-refugia revealed in blackfish (Dallia): implications for understanding the effects of Pleistocene glaciations on Beringian taxa and other Arctic aquatic fauna". BMC Evolutionary Biology. 15 (1): 144. Bibcode:2015BMCEE..15..144C. doi:10.1186/s12862-015-0413-2. PMC 4506597. PMID 26187279.
8. ^ Crossman E, Ráb P (1996). "Chromosome-banding study of the Alaska blackfish, Dallia pectoralis (Euteleostei: Esocae), with implications for karyotype evolution and relationship of esocoid fishes". Canadian Journal of Zoology. 74 (1): 147–156\. Bibcode:1996CaJZ...74..147C. doi:10.1139/z96-019.
9. ^ Campbell, Matthew A.; Takebayashi, Naoki; López, J. Andrés (2015-07-19). "Beringian sub-refugia revealed in blackfish (Dallia): implications for understanding the effects of Pleistocene glaciations on Beringian taxa and other Arctic aquatic fauna". BMC Evolutionary Biology. 15 (1): 144. Bibcode:2015BMCEE..15..144C. doi:10.1186/s12862-015-0413-2. ISSN 1471-2148. PMC 4506597. PMID 26187279.

Taxon identifiers

Dallia|

* Wikidata: Q4154182
* Wikispecies: Dallia
* CoL: 3ZKX
* EoL: 27819
* GBIF: 2346617
* iNaturalist: 87840
* ITIS: 162158
* NCBI: 75938
* Open Tree of Life: 357550
* WoRMS: 268944

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