From 24 July to 4 September 2019, I worked at Laboratory of Aquatic Toxicology and Ichtyopathology, Vodňany.  The internship was carried out as part of the project Development of USB – International Mobility – MSCA – IF (CZ.02.2.69/0.0/0.0/17_050/0008486). The main goal of the stay was application of new methods, processing and evaluation of invertebrate samples. One part of the stay was participation on XIX. Toxicological Conference, International Conference Toxicity and Biodegradability of Matters Important in Aquatic Environments, 21 – 23 September 2019. I presented an oral presentation about “Effects of a neonicotinoid insecticide on Mytilus galloprovincialis”.