I am pleased to inform that I, Wei Guo and Md Shakhawate Hossain visited Latin America, Colombia from 14th September -19th September 2019 to attend SETAC Latin America 13th Biennial Meeting, 15-18 September 2019 in Cartagena, Colombia. We presented our research their orally entitled: Psychoactive compounds at environmental concentration alter burrowing behavior and Cocktail of pharmaceutically active compounds alter the behavior of clonal marbled crayfish. We are grateful to the GAJU project (088/2019/Z and 078/2019/Z) to support our travelling and conference fee.