The ‘silent killer’ of flooding: Murray River fish in dire straits as water quality drops

Scientists fear an ecological disaster is playing out in parts of the river because of alarmingly' low dissolved oxygen levels

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Stretches of the Murray River could become an ecological desert" because widespread flooding has reduced water quality, a scientist has warned, as New South Wales communities rally to save fish populations.

Dr Ian Wright, a professor at Western Sydney University's School of Science, believes fish and other aquatic wildlife are dying in huge numbers along the river as dissolved oxygen levels plummet - and the ecological impact could be catastrophic".