This Murray cod swam 860km, smashing records

The fish has been named Arnie, after Australia’s recently retired Olympic champion, Ariarne Titmus

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Understanding Murray cod allows researchers to adapt water flows to protect their environment.

(AFP)

An Australian freshwater Murray cod has surprised scientists by swimming a marathon 860 kilometres along a major river system — believed to be a record for the species.

The fish, named Arnie after Australia’s recently retired Olympic champion, Ariarne Titmus, was first tagged in early 2022 in Mullaroo Creek, about 13 hours’ drive west of Sydney, said Arthur Rylah Insti tute researcher Zeb Tonkin.