Polish shrimpbreeder since 2004, specialised in shrimp colouration and diseases, owner of Kumak Shrimp. Since 2010 he works on color selection of freshwater shrimps of genra Caridina, Neocaridina and Paracaridina as well as crayfish genra like Cambarellus, Cherax and Procambarus. Rafal also does research on shrimp diseases proposing diagnostics and treatment methods. PhD student at Faculty of Animal Sciences of Warsaw University of Life Sciences, specialisation: Animal breeding. Judge in international crustaceans contests. Main organizer of polish Warsaw Shrimp Contest that is a part of one of the biggest aquarium only events in Europe called Polish International Aquarium Show.