In 2010, ASFB hosted a climate change symposium associated with the last conference held in Melbourne. That symposium resulted in a special edition of Marine and Freshwater Research titled Climate change  and Australian aquatic environments, fish and fisheries (http://www.publish.csiro.au/MF/issue/5635) that included 12 papers on climate change issues. Here we are in 2018; climate change is still happening, and the keen interest from ASFB and its constituents remains, so we are revisiting this important topic. In this paper I will review 2010, assess our predictions from that time and update our knowledge. This will provide an introduction for the many other valuable papers to be presented on this theme.