The Lungfish (Neoceratodus forsteri) encapsulates the quintessential characteristics for surviving in the Australian aquatic environment: resistance, resilience and persistence. As the original logo for the Australian Society for Limnology (ASL), it is particularly appropriate to represent the long-term and older members of ASL, and now AFSS. The criterion for membership of the Lungfish Chapter is AFSS/ASL membership of  25 years or more.  

The Lungfish Chapter seeks to maintain an active involvement of these members with AFSS and to facilitate their mentoring of junior and mid-career members. It provides a means of enhancing the intellectual and social environment of the society, longitudinal transfer of ideas and skills, enhanced networking, retention of corporate memory and providing an identified group who can be called upon to provide expert opinion, especially in matters involving historical issues. The Lungfish Lecture is an important event at the annual conference whereby we can all learn from the wisdom and life experience of a renowned freshwater scientist.