I was born on May 3, 1974. The most important stages of my scientific career: • 1996 – 2001 University of Warmia and Mazury in Olsztyn, Faculty of Environmental Protection and Fisheries, Fisheries major, MSc. Master's thesis: “Comparison of the European grayling (Thymallus thymallus L.) and rainbow trout (Oncorhynchus mykiss W.) growth rate, under trout farm conditions." • 2001 – 2006 University of Warmia and Mazury in Olsztyn, Faculty of Environmental Protection and Fisheries - Full-time Doctoral Studies, PhD in agricultural sciences. Doctoral thesis “Optimization of European grayling (Thymallus thymallus L.)” controlled reproduction technology." • From 2006 to this day scientific and lecturer worker at University of Warmia and Mazury in Olsztyn, Faculty of Animal Bioengineering, Department of Ichthyology and Aquaculture.