Did you know if it is raining fish, then it is most likely to be the Spangled Perch, known to have astounding dispersal abilities? That you can find a nursery for fish eggs under the hood of some male fish? And do you know the age of a 30 kilogram Murray Cod? You can find answers to these and much more in the new book Ecology of Australian Freshwater Fishes being launched on Wednesday 18 September at Charles Sturt University (CSU) in Albury-Wodonga. Book editor and researcher in fish biology with the Institute for Land, Water and Society, Dr Paul Humphries, and several chapter authors from CSU will be on hand at the launch of the book which outlines the biology and ecology of Australian freshwater fish as part of the Murray Darling Seminar Series, starting at 3 pm. “Australia is home to about 300 species of freshwater fishes. Despite the diversity and harshness of the Australian environment in which the species have evolved, populations of these fish have been decimated over the past 200 years, with up to one-third of these species are now threatened with extinction,” Dr Humphries said.