Cardiovascular capacity of fishes to respond environmental stressors. The aim of these studies is to evaluate how fish can respond to different environmental stressors like climate warming, hypoxia and environmental toxins and their interactions. Studies are done from molecular level responses to functional responses. For the studies we are using e.g. threespined sticklebacks from nuclear power plant areas and analysing how decades of warming has influenced their capacity to respond other environmental challenges. We are also evaluating thermal tolerances and cardiac capacities of migrating salmonids.