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To date, twelve complete genomes representing eleven species belonging to sixgenera have been sequenced in salmonids. For the genus Salvelinus, it wassupposed to sequence the genome of Arctic char, one of the most variablespecies of vertebrate animals. Sequencing was carried out (Christensen et al.,2018) using the tissues of the female IW2-2015 obtained from the companyengaged in industrial aquaculture of chars - Icy Waters Ltd. The companyexploits two of its own broodstocks - NL and TR, originating from the charsfrom the Nauyuk Lake and the Tree River (Nunavut, Canada). Since the completemitochondrial genome of the female IW2-2015 was absent in the publishedassembly ASM291031v2, we determined its type and complete sequence from thesequence read archives taken from Genbank. It was found that the female'smitogenome belongs to the BERING haplogroup, which is characteristic ofNorthern Dolly Varden S. malma malma. Analysis of other unlinked diagnosticloci encoded by nuclear DNA (ITS1, RAG1, SFO-12, SFO-18, SMM-21) also revealeddistinctive characters of Northern Dolly Varden in female IW2-2015. It wasconcluded that the genomic assembly ASM291031v2 was obtained not from anindividual of Arctic char S. alpinus, but from an individual of a relatedspecies - Northern Dolly Varden S. malma malma. The identical to the IW2-2015female characteristics of diagnostic loci were found in other individuals fromthe broodstock TR. Apparently, the broodstock TR is entirely a strain derivedfrom Northern Dolly Varden. Since assembly ASM291031v2 was obtained from aspecimen originated from the marginal population of Northern Dolly Varden (TreeR.) isolated from the main range of the species and with some traces ofintrogressive hybridization, this assembly can hardly be considered as adescription of a typical genome of S. malma malma.

Assembly ASM291031v2 (Genbank: GCA_002910315.2) identified as assembly  of the Northern Dolly Varden (Salvelinus malma malma) genome, and not the  Arctic char (S. alpinus) genome