Investigations into intraspecific genetic and epigenetic (planned in near future) diversity of fish species within phylogeographic, anthropogenic, conservation and microevolution contexts. Anthropogenic activity impacts on the changing and formation of population genetic structure of commercially valuable fish species, especially Anguilla anguilla and Perca fluviatilis. Ichthyology and molecular ecology. Investigations into intraspecific genetic diversity and microevolution of other taxonomic groups. For my research I am using standard methods of population genetics: DNA extraction from various animal tissues, PCR with mtDNA and/or DNA microsatellite markers, electrophoresis, DNA sequencing and/or microsatellite fragments length analysis.