Diploma in biology, University Budapest, 1979. Doctor Natural Science, University Budapest, 1989. Doctor of Philosophy, Hungarian Academy of Sciences, Budapest.
Assistant scientist University Budapest, 1979-1980. Assistant lecturer Teacher's Training School, Budapest, 1981. Curator Natural History Museum, 1982-1993.
Senior scientist Hungarian Academy of Sciences, Tihany, 1994-1998, Institute Biological University Veszprem, since 1999.
Member Hungarian Algological Society (co-president since 1990), International Society Limnology, International Phycological Society.
Married G.-Toth Laszlo, November 16, 1978. Children: Marcell, Kamilla, Franciska.