Native Australian fish is important for fresh water ecosystems as they are a food source for bigger fish and birds such as pelicans, cormorants and gullsGet our breaking news email, free app or daily news podcastResidents from the New South Wales central west town of Lake Cargelligo first started to notice fish dying in their local lake two weeks ago.Since then, officials have estimated thousands of bony herring, a native Australian fish, have perished. They suspect a drop in water temperature at the lake has triggered what is known as “winter die off”.Sign up for Guardian Australia’s breaking news email Continue reading...