Аннотация:The genetic diversity of ten microsatellite loci is examined in samples of Arctic rainbow smelt. Theexpected heterozygosity estimates vary in the range of 12.6–83.9% (mean 55.3%). The degree of genetic dif-ferentiation is statistically significant: θ = 2.8%, 95% CI (1.4–4.9%). The greatest differences are foundbetween datasets of smelt in Eastern and Western Kamchatka. The samples from Lake Nerpich’e demon-strate the maximum estimates of divergence from the other datasets from both the western and eastern coasts