2. Belgium since 1979 (Antwerp and Arlon). Honorary member Belgium Cichlid Association (ABCV).

3. Germany since 1986 (various places). 

4. United States since 1989 (various places). Received the "Guy Jordan Retrospective Award" from the American Cichlid Association in 2003. Received "Outstanding Achievement Award" from the Pacific Coast Cichlid Association in 2003.

     4a. 1999. Seminar at University of Maine at Orono
     4b. 2001. Plenary lecture at the annual meeting of
     American Society of Ichthyologists and Herpetologists 
     at Penn State.

5. United Kingdom since 1989 (various places).

6. France since 1992 (various places). Honorary member French Cichlid Association (AFC).

7. Sweden since 1991 (Gothenburg, Kalmar, and Stockholm).

8. Hong Kong in 1991.

     8a. Seminar at the Polytechnical University

9. Taiwan in 1991 (Taipei and Kaochung).

10. Norway in 1992 (Dramman).

11. Denmark since 1993 (Kopenhagen, Aarhus, and Aalborg).

12. Switzerland since 1993 (various places).

13. Austria since 1993 (Wien).

14. Czech Republic since 1993 (Brno).

15. Slovakia in 1993 (Bratislava).

16. Italy since 1995 (Faenza).

17. Australia since 1999 (Melbourne, Sydney, Brisbane and Perth).

18. Canada since 2000 (Guelph, Hamilton and Winnipeg). Honorary president Canadian Rift Lake Cichlid Association (CRLCA).

19. Poland in 2004 (Warsaw)

20. Portugal in 2005 (Lisbon)

21. Bermuda in 2007 (Hamilton)

22. Mexico in 2008 (Monterey)