| Time Frame | Function/Topic | Firm |
|---|
| September 2005 | Working on an article, ornamental fish culture in the Netherlands, for 'Aquacultuur', magazine of NEVEVI (Nederlandse Vereniging van Viskwekers) and NGvA (Nederlands Genootschap voor Aquacultuur). | |
| March 2005 | Course Assistent 'Fish Reproduction Course' | Wellant College, Houten (the Netherlands) |
| 2004-2005 | Internship: potential of business development in the Dutch ornamental fishculture industry. | LEI (landbouw-economisch instituut), departement Wageningen |
| December 2003 & August 2000 | SCUBA trips to Zambia and Tanzania, collecting and exporting Cichlid fish species from Lake Tanganyika for the ornamental fish industry. | |
| July 2003 | Review paper on the inter- and intraspecific social relations of Petrochromis and Tropheus species in Lake Tanganyika, Eastern Africa. | |
| February-July 2003 | Internship: Behavioural experiments on cichlid fish species (from southern Lake Victoria, Tanzania), raised in a laboratory under hypoxic conditions. | IBL (Instituut Biologie Leiden, Universiteit Leiden) |