The GoConsult is an independent consultancy involved with ship-mediated biological invasions and species introductions for aquaculture purposes since 1999. Dr. Gollasch was chairman of the ICES Working Group on Introductions and Transfers of Marine Organisms (2001-2006). This group commented on the project to re-import sturgeons from North America to the Baltic countries and also monitors through country reports the importation of life specimens for trade and aquaculture, including sturgeons. Today's work is focussed also on the development of risk assessment and ballast water management scenarios for Europe as well as on specific efficacy tests of ballast water treatment systems.